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annotations/ARCTIC_text/arctic_s01_box_use_01_viz_1.json

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+{
+  "seq_name": "arctic_s01_box_use_01_viz",
+  "frame_start": 90,
+  "frame_end": 150,
+  "split": "train",
+  "annotations": [
+    {
+      "left": "The hand holds a static, tense pose with the index and middle fingers hyperextended and the thumb bent. The pinky finger moves slightly.",
+      "right": "The thumb opens and then closes. The other fingers exhibit various hyperextension movements, and the spacing between them changes dynamically.",
+      "two_hands_relation": "The hands remain far apart, with the right hand moving upwards relative to the left."
+    },
+    {
+      "left": "The index and middle fingers are held in a fixed hyperextended posture, while the ring and pinky fingers show subtle movements into and out of hyperextension.",
+      "right": "The thumb extends and then bends again mid-sequence. The remaining fingers shift into hyperextended states, and the spaces between the fingers repeatedly open and close.",
+      "two_hands_relation": "There is no interaction between the hands; they maintain a large distance as the right hand shifts to a position above the left."
+    },
+    {
+      "left": "The thumb is held bent while the index finger is constantly hyperextended at its base and middle joints. The middle finger is also hyperextended at its base. Throughout the sequence, the ring finger gradually hyperextends, and the pinky finger moves from a hyperextended to a straight state and back again.",
+      "right": "The thumb begins bent, extends fully by mid-sequence, and then quickly bends again. The other four fingers all transition into various states of hyperextension at their base or middle joints. The spacing between the fingers is highly active, particularly between the index and middle fingers, which close, open, and close again.",
+      "two_hands_relation": "The hands remain far apart. During the first half of the motion, the right hand moves from a position aligned with the left to a position above it, and from in front of the left to being aligned with it."
+    },
+    {
+      "left": "The hand maintains a distinct posture with a bent thumb and hyperextended index and middle fingers. The main motion comes from the ring finger, which hyperextends, and the pinky, which straightens from a hyperextended state and then returns. The wrist moves forward and then downwards for most of the sequence.",
+      "right": "The thumb performs a clear open-and-close motion. The index, middle, ring, and pinky fingers all undergo complex movements, generally shifting from extended postures to hyperextended ones at different joints. Spacing between all fingers changes, with multiple instances of opening and closing.",
+      "two_hands_relation": "The hands do not interact and stay far from each other. The right hand remains to the right of the left hand while moving upwards and backwards relative to it during the first part of the sequence."
+    },
+    {
+      "left": "Throughout the sequence, the thumb remains bent, while the index finger's base (MCP) and middle (PIP) joints are held in a constant state of hyperextension. The middle finger's base joint is also constantly hyperextended. Dynamically, the ring finger's middle joint moves into hyperextension from frame 16 to 57. The pinky finger's base and middle joints straighten from a hyperextended state and then revert to it. The spacing between the ring and pinky fingers opens and closes twice. The wrist moves forward until frame 16 and then mostly downwards until frame 54.",
+      "right": "The thumb extends from a bent position by frame 36 and then quickly bends again by frame 54. The other fingers show significant activity: the index, middle, ring, and pinky fingers all move into hyperextended states at their base joints over the course of the motion. Finger spacing is very dynamic: the gap between the index and middle fingers closes (by frame 25), opens (by frame 45), and closes again (by frame 60), while other finger pairs also open and close. The wrist moves upwards until frame 16, then down until frame 41, and then up again.",
+      "two_hands_relation": "The hands remain far apart with no interaction for the entire duration. Their relative positions change: the right hand is always to the right of the left, moves from being in front to an aligned position over the full 60 frames, and shifts from being vertically aligned to a position above the left hand between frames 3 and 25."
+    }
+  ]
+}

annotations/ARCTIC_text/arctic_s01_capsulemachine_use_01_viz_9.json

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+{
+  "seq_name": "arctic_s01_capsulemachine_use_01_viz",
+  "frame_start": 690,
+  "frame_end": 750,
+  "split": "train",
+  "annotations": [
+    {
+      "left": "Most fingers move into various hyperextended positions, while the thumb bends and straightens. The wrist moves to the left and downward.",
+      "right": "The fingers are held in or move into hyperextended states, with little overall change. The wrist moves to the right and downward.",
+      "two_hands_relation": "The hands remain far apart as they move away from each other horizontally. The right hand shifts from being above and in front of the left to a position below and behind it."
+    },
+    {
+      "left": "The hand shows extensive hyperextension across the four fingers as the sequence progresses. The thumb is an exception, performing a slow extension followed by a quick bend. The wrist moves left, forward, and down.",
+      "right": "The fingers maintain static or slightly shifting hyperextended postures. The wrist executes a steady movement to the right, backward, and down, with a final upward flick.",
+      "two_hands_relation": "The hands maintain a far distance. Their relative orientation changes significantly as the right hand moves from up and front to down and back relative to the left."
+    },
+    {
+      "left": "The thumb extends mid-sequence and then bends again towards the end. The index, middle, ring, and pinky fingers all transition into hyperextended states. Spacing between the fingers changes dynamically throughout. The wrist moves consistently left and forward for most of the motion, while also moving downward.",
+      "right": "The index and pinky fingers are held in a constant state of hyperextension. The middle and ring fingers also display hyperextension, which eases and then returns. At the start, the index and middle fingers spread apart. The wrist moves right, backward, and down before rising at the end.",
+      "two_hands_relation": "The hands stay far apart and move in opposite horizontal directions. The right hand's position relative to the left changes from being in front to behind, and from above to below, before a final upward shift."
+    },
+    {
+      "left": "A defining feature is the progressive hyperextension of the fingers; the middle, ring, and pinky fingers' base joints move into a hyperextended state. The index finger is particularly complex, with both its base and middle joints hyperextending at different times. The thumb uniquely moves from bent to extended and back to bent. The wrist moves left and forward, then shifts backward at the end.",
+      "right": "Most fingers exhibit hyperextension. The index and pinky fingers' middle joints are statically hyperextended. The middle finger's middle joint starts hyperextended, straightens, and then hyperextends again late in the sequence. The ring finger's base joint also hyperextends. The thumb bends slightly in the second half. The wrist moves swiftly to the right and backward.",
+      "two_hands_relation": "There is no interaction as the hands remain far apart. Their relative positioning evolves dynamically; the right hand is always to the right of the left but moves from front to back, and executes a down-then-up movement relative to the left hand."
+    },
+    {
+      "left": "The thumb slowly extends from a bent state between frames 26 and 53, then quickly bends again at the sequence's end. All other fingers develop states of hyperextension: the index finger's middle joint hyperextends by frame 18, followed by its base joint after frame 34. The middle, ring, and pinky fingers all move toward a hyperextended state at their base joints over the duration. The wrist moves fast to the left from frame 13 onward, moves forward until frame 46, and moves down until frame 56 before a rapid upward motion.",
+      "right": "Widespread hyperextension is maintained. The middle joints of the index and pinky fingers are constantly hyperextended. The middle finger's middle joint is initially hyperextended, straightens by frame 16, and then re-hyperextends towards the end, after frame 45. The ring finger's base joint also moves into hyperextension. The wrist moves fast to the right and backward throughout, while moving down until frame 48 and then quickly reversing to move upward.",
+      "two_hands_relation": "The hands maintain a far distance for the entire sequence. Their relative position changes continuously: the right hand is always to the right of the left but moves from a forward position to a rear position between frames 5 and 55. Vertically, it moves from above the left hand to below it by frame 45, and then moves up again in the final moments."
+    }
+  ]
+}

annotations/ARCTIC_text/arctic_s01_espressomachine_grab_01_viz_1.json

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+{
+  "seq_name": "arctic_s01_espressomachine_grab_01_viz",
+  "frame_start": 90,
+  "frame_end": 150,
+  "split": "train",
+  "annotations": [
+    {
+      "left": "Many fingers are held in a hyperextended state. The thumb bends and then quickly hyperextends at the end, while the other fingers change their spacing.",
+      "right": "Several fingers move into a hyperextended state while others straighten. The spacing between the fingers closes up mid-sequence.",
+      "two_hands_relation": "The hands remain far apart, with the right hand consistently in front and to the right of the left, but their relative vertical position changes repeatedly."
+    },
+    {
+      "left": "The hand shows widespread hyperextension across multiple fingers. The thumb undergoes a distinct motion, bending for most of the sequence before snapping into hyperextension. The fingers dynamically change their spacing.",
+      "right": "The fingers, particularly the middle, ring, and pinky, transition into hyperextended or fully extended states. The wrist moves up for most of the motion and then quickly down at the end.",
+      "two_hands_relation": "The hands do not interact, maintaining a far distance. Their primary dynamic relationship is a repeated, fast shift in which hand is higher than the other."
+    },
+    {
+      "left": "Several fingers, including the index, ring, and pinky, maintain a hyperextended posture. The thumb first bends fully, then quickly moves to a hyperextended state towards the end. Mid-sequence, the fingers change their spacing, closing and then reopening. The wrist moves forward, up, and from side to side.",
+      "right": "The index finger remains straight, while the middle, ring, and pinky fingers straighten from a bent posture, with some joints becoming hyperextended. The thumb bends slightly. The wrist performs a long upward movement followed by a fast downward drop.",
+      "two_hands_relation": "The hands stay far apart. The right hand is always to the right of and in front of the left. Their vertical relationship is dynamic, with the right hand rapidly moving from above the left to below it, and back, multiple times."
+    },
+    {
+      "left": "The index, ring, and pinky fingers are notably hyperextended. The thumb bends progressively and then hyperextends rapidly near the end. The middle finger's joints move between extended and hyperextended states. All finger spacings change dynamically after the midpoint of the sequence.",
+      "right": "The middle, ring, and pinky fingers straighten their base joints while their middle joints become hyperextended. The thumb starts bending late in the motion. The fingers, initially open, close together during the second half of the sequence.",
+      "two_hands_relation": "There is no physical contact as the hands remain far apart. While the right hand is fixed to the right and front of the left, it oscillates vertically above and below the left hand at a fast speed."
+    },
+    {
+      "left": "Multiple fingers display significant hyperextension. The index and ring fingers' PIP joints are constantly hyperextended. The pinky's PIP and DIP joints are also constantly hyperextended. The thumb's base joint bends until frame 39, then quickly hyperextends between frames 48 and 58. Mid-sequence, the finger spacings change: the index-middle and ring-pinky pairs close then reopen, while the middle-ring pair opens then re-closes. The wrist moves forward, and performs an up-down-up vertical motion.",
+      "right": "The hand transitions to a more open, straightened posture. The middle, ring, and pinky fingers straighten from bent states at their base joints after frame 37, while their PIP joints simultaneously move into a hyperextended state. The thumb begins to bend after frame 33. The index finger remains fully extended. The space between the index-middle and middle-ring fingers closes between frames 35 and 57. The wrist moves up until frame 47, then drops down fast.",
+      "two_hands_relation": "The hands maintain a far distance throughout the entire sequence, with no interaction. The right hand is constantly positioned to the right of and in front of the left hand. Their relative vertical position changes three times at a fast speed: the right hand moves from above to below the left (frames 13-26), returns to a position above the left (frames 26-46), and moves below the left again towards the end (frames 46-60)."
+    }
+  ]
+}

annotations/ARCTIC_text/arctic_s01_ketchup_grab_01_viz_4.json

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+{
+  "seq_name": "arctic_s01_ketchup_grab_01_viz",
+  "frame_start": 450,
+  "frame_end": 510,
+  "split": "train",
+  "annotations": [
+    {
+      "left": "The wrist sweeps in a broad arc as multiple fingers move into hyperextended positions. The thumb bends throughout the motion.",
+      "right": "The wrist performs a similar sweeping motion while several fingers straighten, with the thumb, ring, and pinky ultimately becoming hyperextended.",
+      "two_hands_relation": "The hands, with the right hand consistently above the left, start far apart and move closer together towards the end."
+    },
+    {
+      "left": "The hand moves left, back, and down, and then reverses its path. Most fingers exhibit significant hyperextension, while the thumb bends.",
+      "right": "The hand moves right, back, and down. The fingers, initially open, close together as several fingers and the thumb move into hyperextended states.",
+      "two_hands_relation": "The palms start far apart and quickly approach a medium distance in the latter half of the sequence, maintaining a stable relative orientation."
+    },
+    {
+      "left": "The thumb progressively bends. The other four fingers are defined by complex hyperextension movements, particularly the middle finger which repeatedly enters and exits a hyperextended pose. The wrist moves left and back before returning right and forward. At the start, the index and middle fingers spread apart.",
+      "right": "The index finger straightens from an initial hyperextended state, while the ring, pinky, and thumb all move into hyperextension towards the end. The middle finger remains straight. The wrist moves right, back, and down. The index, middle, and ring fingers close together.",
+      "two_hands_relation": "The right hand remains consistently above and to the right of the left hand. While initially far, the palms quickly move closer together from the middle of the sequence onwards."
+    },
+    {
+      "left": "The wrist traces a path down, left, and back, then reverses direction to move up, right, and forward. The thumb slowly bends. A key feature is the pervasive hyperextension across the other four fingers, with the middle finger's joints repeatedly moving in and out of this state. The index and middle fingers spread open at the beginning.",
+      "right": "The wrist performs a mirrored motion, moving down, right, and back. The thumb, ring, and pinky fingers all hyperextend late in the sequence. The index finger starts hyperextended and gradually straightens. The fingers start spread apart and close up during the first half.",
+      "two_hands_relation": "The two hands perform a mirrored sweeping motion. They maintain a fixed relative orientation where the right hand is up and to the right, and they quickly reduce the distance between their palms in the second half of the action."
+    },
+    {
+      "left": "The thumb bends at its base from frame 19 and at its tip from frame 39. A critical feature is the hyperextension across multiple fingers: the index finger's middle joint becomes hyperextended from frame 15, the middle finger's joints repeatedly enter and exit hyperextension, and the ring and pinky fingers also display hyperextension. The wrist moves fast from right-to-left (frames 11-38) then left-to-right (frames 38-60), while also moving down then up. Spacing between the index and middle fingers opens at the start.",
+      "right": "The thumb's base joint bends before quickly hyperextending between frames 43 and 54. The index finger begins hyperextended and straightens by frame 57. The ring and pinky fingers both move into hyperextension towards the end of the sequence. The middle finger stays fully extended. The wrist moves right and back, then left and forward at fast speeds. Spacing between the index, middle, and ring fingers closes by frame 32.",
+      "two_hands_relation": "The hands do not make contact. The right hand is always positioned to the right of and above the left hand. A significant interaction occurs from frame 33 onwards, as the palms quickly move from a far distance to a medium distance."
+    }
+  ]
+}

annotations/ARCTIC_text/arctic_s01_ketchup_use_02_viz_2.json

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+{
+  "seq_name": "arctic_s01_ketchup_use_02_viz",
+  "frame_start": 210,
+  "frame_end": 270,
+  "split": "train",
+  "annotations": [
+    {
+      "left": "The fingers, starting in a hyperextended pose, gradually straighten while the thumb bends inward. The wrist moves down and then up.",
+      "right": "Several fingers are held in a static, hyperextended posture. The thumb extends, and the fingers draw closer together.",
+      "two_hands_relation": "The palms start far apart and move closer together mid-sequence."
+    },
+    {
+      "left": "The hand opens from a hyperextended state, with all four fingers straightening at their base. The thumb simultaneously bends. The wrist moves right, down, and then up.",
+      "right": "The hand maintains a tense posture with multiple fingers hyperextended. The thumb straightens during the first half, and the outer fingers close in.",
+      "two_hands_relation": "The right hand, positioned above and to the right of the left, moves down into vertical alignment as the palms approach each other."
+    },
+    {
+      "left": "Initially, the four main fingers are hyperextended at their base joints and they slowly straighten. The middle, ring, and pinky fingers also become hyperextended at their middle joints. The thumb bends mid-sequence. The space between the index and middle fingers opens throughout.",
+      "right": "The index finger remains straight, while the middle, ring, and pinky fingers are held in hyperextended positions. The thumb straightens from a bent pose. The initially open spacing between the outer fingers closes.",
+      "two_hands_relation": "The hands, which are horizontally and depth-aligned, move closer. The right hand begins above the left and moves down to become vertically aligned."
+    },
+    {
+      "left": "The four fingers all start with hyperextended base joints that transition to a fully extended state. Over the same period, the middle, ring, and pinky fingers also develop hyperextension in their middle joints. The thumb bends from extended to nearly fully bent. The wrist moves right, then forward, while also dipping down and rising back up.",
+      "right": "The ring finger is held with two hyperextended joints, while the middle and pinky fingers also show constant hyperextension. The thumb straightens out. The spacing between the middle, ring, and pinky fingers closes during the motion.",
+      "two_hands_relation": "The palms quickly approach each other mid-sequence, moving from far to a medium distance. The right hand, always to the right of the left, descends to match the left hand's height."
+    },
+    {
+      "left": "From the start of the sequence, all four fingers are hyperextended at their base (MCP) joints, and they gradually move to a fully extended state. Concurrently, the middle, ring, and pinky fingers transition from fully extended to hyperextended at their middle (PIP) joints. The thumb progressively bends between frames 13 and 44. The spacing between the index and middle fingers opens steadily. The wrist moves right until frame 37, forward from frame 26, and executes a down-then-up motion centered around frame 30.",
+      "right": "A static, strained posture is maintained, with the ring finger constantly hyperextended at both its base and middle joints, and the middle and pinky fingers also showing constant hyperextension. The pinky's middle joint moves from hyperextended to fully extended by frame 32. The thumb straightens from a partially bent state by frame 39. The spacing between the middle, ring, and pinky fingers closes between frames 8 and 59.",
+      "two_hands_relation": "The hands remain far apart until frame 33, when their palms approach each other at a fast speed, reaching a medium distance by frame 43. Throughout the motion, the right hand is consistently to the right of the left and aligned with it on the front-back axis. Vertically, the right hand starts in a higher position and moves down to align with the left hand between frames 25 and 53."
+    }
+  ]
+}

annotations/ARCTIC_text/arctic_s01_laptop_use_01_viz_1.json

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+{
+  "seq_name": "arctic_s01_laptop_use_01_viz",
+  "frame_start": 150,
+  "frame_end": 210,
+  "split": "train",
+  "annotations": [
+    {
+      "left": "The fingers are held in a hyperextended state, particularly the index finger, while the thumb bends inward.",
+      "right": "Fingers display widespread hyperextension as the thumb moves from bent to straight. The fingers spread and close actively.",
+      "two_hands_relation": "The hands move closer for the thumbs to make brief contact, and then they move apart."
+    },
+    {
+      "left": "The hand maintains hyperextended fingers, with the index finger held static. The thumb performs a bending motion.",
+      "right": "The index finger remains in a hyperextended pose, while other fingers also hyperextend. The thumb straightens early in the motion.",
+      "two_hands_relation": "A brief contact occurs between the thumb tips as the palms approach each other and then recede."
+    },
+    {
+      "left": "The index finger is held in a constant hyperextended state at its middle joint, while the middle, ring, and pinky fingers also show hyperextension. The thumb bends inward. The spacing between the index and middle fingers closes and then re-opens.",
+      "right": "The thumb quickly extends from a bent pose and then partially bends again. The index finger mirrors the left, staying hyperextended. Other fingers show various hyperextension movements, and the finger spacing changes frequently.",
+      "two_hands_relation": "The palms move from a far to a medium distance. The tips of the thumbs make contact once, mid-sequence, before the palms move far apart again."
+    },
+    {
+      "left": "Most fingers exhibit hyperextension, with the index finger's middle joint held in this state throughout. The thumb moves to a fully bent position. The wrist moves forward and to the right during the first half of the motion.",
+      "right": "The index finger is also held in a constant hyperextended state. The thumb straightens from a bent pose and then bends again. The other fingers dynamically hyperextend, and the spaces between them open and close repeatedly.",
+      "two_hands_relation": "The hands approach each other to allow a singular contact event between the thumb tips. Afterwards, they separate, while the right hand remains consistently to the right of the left."
+    },
+    {
+      "left": "The index finger's middle (PIP) joint is hyperextended for the entire sequence. The middle, ring, and pinky fingers also display hyperextension at their base or middle joints, primarily during the first half. The thumb bends from a partial to a fully bent state between frames 9 and 25. The index and middle fingers close together by frame 21 and then spread apart. The wrist moves right and forward until mid-sequence.",
+      "right": "The thumb begins fully bent, extends quickly by frame 22, and then slowly bends again. The index finger's middle joint is constantly hyperextended. The middle, ring, and pinky fingers undergo multiple, rapid hyperextension movements. The finger spacing is highly active, with the gaps between all adjacent fingers opening and closing throughout the sequence. The wrist moves left and up at the start.",
+      "two_hands_relation": "A critical contact event occurs at frame 17, where the left and right thumb tips touch. This interaction is facilitated by the palms moving from a far distance to a medium distance until frame 32. After this point, from frame 45 to the end, the palms move apart again. Throughout, the hands remain horizontally aligned, with the right hand always to the right of the left."
+    }
+  ]
+}

annotations/ARCTIC_text/arctic_s01_laptop_use_04_viz_0.json

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+{
+  "seq_name": "arctic_s01_laptop_use_04_viz",
+  "frame_start": 30,
+  "frame_end": 90,
+  "split": "train",
+  "annotations": [
+    {
+      "left": "The fingers exhibit complex hyperextended postures and dynamic spacing changes, while the wrist moves continuously.",
+      "right": "Fingers also show widespread hyperextension and movement. The thumb moves into a hyperextended state at the end. The wrist is active.",
+      "two_hands_relation": "The hands remain far apart but change their relative up-down and front-back positioning."
+    },
+    {
+      "left": "Most fingers are held in or move into hyperextended positions, especially the ring and pinky. The wrist moves right, up, and oscillates forward and back.",
+      "right": "The fingers actively shift between extended and hyperextended states. The wrist moves generally left and up.",
+      "two_hands_relation": "No contact occurs. The hands maintain a large distance while the right hand moves from below the left hand to above it."
+    },
+    {
+      "left": "Several fingers, particularly the ring and pinky, maintain a constant hyperextended state in some joints. The index and middle fingers also transition into hyperextension. Finger spacing changes dynamically across all fingers. The wrist moves consistently to the right and upwards for most of the sequence.",
+      "right": "The hand is very active, with fingers frequently moving into hyperextended states. The thumb notably cycles through bending and extending before hyperextending at its base near the end. Fingers spread apart and come together. The wrist moves left and up.",
+      "two_hands_relation": "The hands stay far apart. The right hand is always to the right of the left, but its vertical position changes from below to above the left hand, and it also shifts between being behind and aligned with the left hand."
+    },
+    {
+      "left": "The index, middle, ring, and pinky fingers all exhibit significant hyperextension. The thumb bends and straightens without hyperextending. Spacing between the fingers opens and closes periodically. The wrist moves steadily rightward, while moving down then up, and oscillating between front and back.",
+      "right": "Widespread hyperextension is a key feature, affecting all fingers at different times. The thumb's base joint moves from bent to hyperextended by the end of the sequence. The fingers also actively spread and close. The wrist has a complex trajectory, moving primarily left, up, and forward before retreating.",
+      "two_hands_relation": "The hands do not interact and stay far apart. Their relative positioning is dynamic; the right hand moves from a lower to a higher position relative to the left and oscillates in the front-back dimension."
+    },
+    {
+      "left": "The hand shows extensive hyperextension. The index finger's base and middle joints move from extended to hyperextended by frame 43. The ring and pinky fingers maintain constant hyperextension at their middle joints. The thumb bends at its base until frame 46. Spacing is active: the index/middle fingers close then open then close again, while other adjacent fingers also open and close. The wrist moves rightward for the entire duration, initially moving down and forward, then moving up while oscillating front-to-back.",
+      "right": "The hand is characterized by complex and widespread hyperextension. The thumb's base joint transitions from partially bent to fully extended, then bent, and finally moves into hyperextension from frame 41 onwards. The index, middle, ring, and pinky fingers all show various joints moving into and out of hyperextended states. Spacing is dynamic, with the index/middle and middle/ring fingers spreading apart and then closing. The wrist moves left until frame 20, then right, then left again, while generally moving up from frame 17 onwards.",
+      "two_hands_relation": "The hands remain far apart with no contact. The right hand is always to the right of the left. Their relative position changes significantly: vertically, the right hand moves from below the left to above it between frames 17 and 38. In depth, the right hand moves from behind the left hand to aligned with it, then back, then aligned again in three distinct phases."
+    }
+  ]
+}

annotations/ARCTIC_text/arctic_s01_microwave_grab_01_viz_2.json

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+{
+  "seq_name": "arctic_s01_microwave_grab_01_viz",
+  "frame_start": 270,
+  "frame_end": 330,
+  "split": "train",
+  "annotations": [
+    {
+      "left": "The hand exhibits widespread, dynamic hyperextension across all four fingers, while the thumb remains tightly bent.",
+      "right": "The fingers are held in a tense, open, and hyperextended posture, with a slow relaxation at the base joints as the thumb bends inward.",
+      "two_hands_relation": "The hands remain far apart, with the right hand positioned above and to the right of the left hand."
+    },
+    {
+      "left": "While the thumb is held in a fully bent state, the other fingers continuously move in and out of various hyperextended positions.",
+      "right": "The hand maintains a static, hyperextended pose in most fingers, with the thumb being the only one showing significant bending motion.",
+      "two_hands_relation": "A large, constant distance is maintained between the hands, which do not interact."
+    },
+    {
+      "left": "The thumb remains fully bent. The other four fingers are characterized by significant hyperextension; for instance, the index finger's base joint hyperextends while its middle joint is already hyperextended. The spacing between fingers changes dynamically throughout the motion. The wrist moves up and to the right.",
+      "right": "The thumb gradually bends at its base. The other fingers, all held far apart, slowly move from a hyperextended state to a straight one at their base joints, while other joints remain hyperextended. The wrist moves forward.",
+      "two_hands_relation": "The hands stay far from each other. The right hand is consistently positioned above and to the right of the left hand, and over time it moves to a position in front of the left hand."
+    },
+    {
+      "left": "The thumb is held bent and tucked in. The index, middle, ring, and pinky fingers all perform complex motions involving hyperextension at multiple joints. The fingers spread apart and then close together again mid-sequence. The hand as a whole drifts upward, backward, and to the right.",
+      "right": "The hand holds a wide, splayed posture with prominent hyperextension in the four main fingers. The base joints of these fingers slowly straighten, while the thumb bends. The wrist moves up initially, then down, while constantly moving forward.",
+      "two_hands_relation": "There is no interaction between the hands. Their relative orientation remains fixed, with the right hand above and to the right of the left, but it shifts forward during the sequence."
+    },
+    {
+      "left": "The thumb is held in a fully bent state for the entire sequence. The four fingers exhibit complex movements characterized by hyperextension. The index finger's base (MCP) joint moves from fully extended to hyperextended, while its middle (PIP) joint remains constantly hyperextended. The middle, ring, and pinky fingers all show dynamic transitions in and out of hyperextension at multiple joints at medium to fast speeds. Finger spacing is also active: the fingers repeatedly open and close in various pairings. The wrist moves to the right and upward until frame 47, and backward until frame 49.",
+      "right": "The thumb's base joint gradually moves from partially to fully bent. The index, middle, and ring fingers all begin with hyperextended base joints that slowly straighten over the 60 frames, while their other joints stay in extended or hyperextended states. The pinky finger shows faster hyperextension movements. All fingers maintain a wide, open spacing throughout. The wrist moves forward throughout the sequence, initially moving up until frame 20 and then moving down from frame 34 onwards.",
+      "two_hands_relation": "Throughout the motion, the hands remain far apart and do not interact. The right hand is always positioned above and to the right of the left hand. Their front-back relationship changes, as the right hand moves from being aligned with the left to being in front of it by the end of the sequence."
+    }
+  ]
+}

annotations/ARCTIC_text/arctic_s01_microwave_use_01_viz_5.json

@@ -0,0 +1,33 @@
+{
+  "seq_name": "arctic_s01_microwave_use_01_viz",
+  "frame_start": 390,
+  "frame_end": 450,
+  "split": "train",
+  "annotations": [
+    {
+      "left": "The hand maintains a static pose with a bent thumb and several hyperextended fingers while its wrist moves down and to the right.",
+      "right": "The hand holds a tense, open pose with most fingers hyperextended. The wrist moves predominantly downwards.",
+      "two_hands_relation": "The hands remain far apart and do not interact, with the right hand staying consistently above and to the right of the left."
+    },
+    {
+      "left": "With the thumb held bent, the index and ring fingers remain constantly hyperextended. The pinky finger also moves into a hyperextended state. The wrist drifts right and down.",
+      "right": "The thumb is bent, while the other fingers are held wide apart and hyperextended. The pinky finger's posture changes throughout. The wrist performs a slow downward and side-to-side motion.",
+      "two_hands_relation": "The hands move independently at a large distance. The right hand is always higher than the left and shifts from being behind it to in front of it."
+    },
+    {
+      "left": "The thumb stays bent throughout. The index and ring fingers are held in a static hyperextended pose. The middle finger gradually straightens from a hyperextended state. The pinky finger moves from hyperextended to straight and back again. The wrist moves right, back, and then down.",
+      "right": "The thumb is held partially bent, while the index, middle, and ring fingers are all hyperextended at their base joints. The pinky moves from bent to hyperextended. All fingers are spaced open. The wrist moves down while shifting horizontally.",
+      "two_hands_relation": "The hands maintain a far distance. The right hand is consistently positioned above and to the right of the left, and mid-sequence it moves from behind the left hand to in front of it, then back."
+    },
+    {
+      "left": "The hand holds a distinct pose with a fully bent thumb. The middle joint of the index and ring fingers are constantly hyperextended. The middle finger transitions from hyperextended to straight. The pinky finger moves between hyperextended and straight postures. Towards the end, the index and middle fingers close together while the middle and ring fingers spread apart.",
+      "right": "The thumb is partially bent. The index, middle, and ring fingers are all hyperextended at their base. The ring and pinky fingers also transition to a hyperextended state in their middle joints during the motion. The fingers remain widely spread throughout.",
+      "two_hands_relation": "The hands remain far apart, with no interaction. The right hand stays above and to the right of the left hand while executing a front-to-back and back-to-front movement relative to the left hand."
+    },
+    {
+      "left": "The thumb is held in a fully bent state. A static, tense posture is maintained in the index and ring fingers, which are constantly hyperextended at their middle (PIP) joints. The middle finger's PIP joint starts hyperextended and moves to a fully extended state by frame 48. The pinky finger's base (MCP) joint moves from hyperextended to fully extended and back, while its PIP joint becomes hyperextended towards the end. The wrist moves right, back, and down for most of the sequence, then moves forward after frame 41.",
+      "right": "The thumb is held partially bent. The base (MCP) joints of the index, middle, and ring fingers are constantly hyperextended. The index finger is also hyperextended at its middle (PIP) joint. During the sequence, the ring and pinky PIP joints also move into a hyperextended state. The pinky's base joint bends before transitioning fast into a hyperextended state. All fingers maintain an open spacing throughout. The wrist moves right until frame 42 then left, and moves down for most of the duration.",
+      "two_hands_relation": "The hands do not interact and maintain a far distance. Their relative position is mostly stable, with the right hand always above and to the right of the left hand. The primary relative motion is the right hand moving from a position behind the left hand to in front of it between frames 22 and 40, and then moving back behind it by the end of the sequence."
+    }
+  ]
+}

annotations/ARCTIC_text/arctic_s01_mixer_grab_01_viz_3.json

@@ -0,0 +1,33 @@
+{
+  "seq_name": "arctic_s01_mixer_grab_01_viz",
+  "frame_start": 450,
+  "frame_end": 510,
+  "split": "train",
+  "annotations": [
+    {
+      "left": "The hand, with several fingers held in a hyperextended state, moves forward and down. The thumb gradually straightens.",
+      "right": "The fingers, starting from an extended position, move into a hyperextended state at their base. The hand moves backward and down.",
+      "two_hands_relation": "The hands approach each other and then move apart. The right hand starts high and in front of the left, ending low and behind it."
+    },
+    {
+      "left": "Most fingers are held hyperextended at the middle joint. The thumb straightens throughout the motion. The wrist drifts forward, down, and from side to side.",
+      "right": "The thumb and other fingers hyperextend at their base joints. All fingers remain closed together. The wrist moves primarily back and down.",
+      "two_hands_relation": "The palms quickly move closer until mid-sequence, then separate. During the approach, the right thumb tip gets near the left palm."
+    },
+    {
+      "left": "The thumb straightens from a bent position. The index, middle, ring, and pinky fingers all exhibit hyperextension in some joints. The spacing between the index and middle fingers, and ring and pinky fingers, opens up. The wrist moves forward, down, and makes a right-then-left motion.",
+      "right": "The thumb, index, middle, and ring fingers all transition to a hyperextended state at their base joints. The pinky finger maintains a hyperextended posture. The wrist moves down and back, with a left-then-right lateral shift.",
+      "two_hands_relation": "The hands rapidly approach each other, then move apart again. The right hand moves from being in front of and above the left hand to a position behind and below it."
+    },
+    {
+      "left": "The thumb's tip joint fully straightens over the course of the motion. The middle, ring, and pinky fingers are consistently hyperextended at their middle joints, while their base joints relax from an extended state. The index finger's middle joint also relaxes from a hyperextended state. The wrist moves forward and down.",
+      "right": "The base joints of the thumb, index, middle, and ring fingers all become hyperextended. The pinky is held hyperextended at its base and tip joints. The hand as a whole moves down and back.",
+      "two_hands_relation": "Initially far apart, the hands move closer together, reaching their nearest point mid-sequence before separating. This corresponds with the right thumb tip approaching the left palm. The right hand's position relative to the left shifts from front-up to back-down."
+    },
+    {
+      "left": "The thumb's tip joint moves from fully bent to fully extended by frame 53. The middle, ring, and pinky fingers maintain hyperextension at their middle joints throughout, while their base joints move from a hyperextended or extended state to a more neutral pose. The index finger's middle joint is initially hyperextended and straightens by frame 52. Spacing opens between the index and middle fingers (frames 17-45) and the ring and pinky fingers (frames 0-51). The wrist moves right until frame 26, then left, while moving forward and slowly down for most of the sequence.",
+      "right": "The thumb's base joint quickly hyperextends by frame 27 and then bends. The index, middle, and ring fingers' base joints also move from fully extended to hyperextended. The pinky is held hyperextended at both its base and tip joints. The wrist moves left then right, while consistently moving backward and downward. All fingers remain closed together.",
+      "two_hands_relation": "The palms rapidly approach one another, moving from a far to a medium distance between frames 0 and 27, and then separate back to far by frame 52. Concurrently, the right thumb tip moves from far to near the left palm by frame 24, then moves away. The right hand's relative position changes dynamically, moving from front to back and from up to down in relation to the left hand."
+    }
+  ]
+}

annotations/ARCTIC_text/arctic_s01_mixer_use_01_viz_6.json

@@ -0,0 +1,33 @@
+{
+  "seq_name": "arctic_s01_mixer_use_01_viz",
+  "frame_start": 390,
+  "frame_end": 450,
+  "split": "train",
+  "annotations": [
+    {
+      "left": "The hand, initially with all fingers hyperextended, gradually moves toward a more neutral, open-handed pose. The wrist moves forward and to the left.",
+      "right": "Most fingers remain in a static, hyperextended state. At the start, the thumb and pinky fingers bend quickly. The wrist moves generally upwards and forwards.",
+      "two_hands_relation": "The hands remain far apart, with the right hand moving to a position slightly above the left hand mid-sequence."
+    },
+    {
+      "left": "The fingers transition from a hyperextended posture to an extended one. The thumb bends inward as the hand moves forward, left, and initially upward.",
+      "right": "The thumb and pinky perform fast bending motions at the beginning, while the index, middle, and ring fingers maintain a hyperextended state with minor changes.",
+      "two_hands_relation": "A constant large distance is maintained between the hands. Their primary relative motion is vertical, as the right hand rises above the left."
+    },
+    {
+      "left": "All four fingers begin with hyperextended base joints and gradually straighten over the course of the motion. The thumb concurrently bends. The spacing between the index and middle fingers, and ring and pinky fingers, opens up mid-sequence. The wrist travels forward and left.",
+      "right": "The index, middle, and ring fingers hold a constant hyperextended pose at their middle joints. At the start, the thumb's base joint bends fast. The pinky also bends fully. The space between the ring and pinky fingers opens up.",
+      "two_hands_relation": "The hands do not interact and stay far from each other. The right hand is always to the right of the left and moves from being vertically aligned to a position above the left hand."
+    },
+    {
+      "left": "The hand's posture evolves from having hyperextended fingers to a relaxed, open state. The thumb straightens at its tip while bending at its base. The wrist moves predominantly forward and left, with an up-then-down trajectory. Several finger pairs spread apart.",
+      "right": "A key feature is the constant hyperextension in the middle joints of all four fingers. In contrast, the thumb and pinky execute fast bending motions at their base joints early on. The wrist moves up and forward before shifting its horizontal direction.",
+      "two_hands_relation": "The hands remain spatially distant. Their front-to-back alignment is constant, while the right hand moves vertically to a position above the left hand during the middle of the sequence."
+    },
+    {
+      "left": "The thumb's tip joint straightens by frame 43 while its base joint bends by frame 49. The index, middle, ring, and pinky fingers all begin with hyperextended base (MCP) joints, which move to a fully extended state at a medium speed. Many middle (PIP) and tip (DIP) joints are also held in a constant state of hyperextension. The space between the index and middle fingers opens between frames 11-23, and the ring and pinky fingers open (15-32) then close (32-47). The wrist moves left and forward until frame 51-53, then quickly right, while also moving up until frame 20 and then down until frame 45.",
+      "right": "All four fingers maintain hyperextension at their middle (PIP) joints throughout. Early in the sequence, the thumb's base joint moves from hyperextended to fully bent at a fast speed between frames 7 and 13. The pinky's base joint also bends fully by frame 27. The middle and ring fingers bend partially at their base joints over the majority of the sequence. The spacing between the ring and pinky opens by frame 26. The wrist moves up until frame 46, forward until frame 52, and horizontally right then left.",
+      "two_hands_relation": "The hands remain far apart for the entire duration. The right hand is consistently to the right of and aligned front-to-back with the left hand. A relative vertical shift occurs between frames 14 and 42, where the right hand moves from being aligned with the left to a position above it."
+    }
+  ]
+}

annotations/ARCTIC_text/arctic_s01_notebook_use_01_viz_4.json

@@ -0,0 +1,33 @@
+{
+  "seq_name": "arctic_s01_notebook_use_01_viz",
+  "frame_start": 330,
+  "frame_end": 390,
+  "split": "train",
+  "annotations": [
+    {
+      "left": "The fingers transition from bent and extended positions into hyperextended states. The wrist moves up and then down.",
+      "right": "The fingers, many starting in a hyperextended pose, gradually relax to more neutral positions. The hand slowly moves forward.",
+      "two_hands_relation": "The hands are initially far apart, move closer together mid-sequence, and then separate again."
+    },
+    {
+      "left": "Most fingers progressively straighten and then hyperextend throughout the motion, while the thumb extends. Finger spacing changes dynamically.",
+      "right": "The fingers gradually move out of their hyperextended postures, and the spacing between them adjusts in the latter half of the sequence.",
+      "two_hands_relation": "The palms approach each other and then move apart, while the right hand moves from a lower to a higher position relative to the left."
+    },
+    {
+      "left": "The thumb extends from a bent position during the first half of the sequence. The index, middle, ring, and pinky fingers all move towards hyperextended states at various joints. The spaces between the fingers open and close multiple times. The wrist moves up and back, then down.",
+      "right": "The index, middle, and ring fingers begin with some joints hyperextended and then move to more extended or partially bent states. The pinky slowly bends. After being static, the fingers begin to spread apart mid-sequence.",
+      "two_hands_relation": "The hands remain far apart but their palms quickly move closer and then separate again mid-sequence. The right hand also moves from a position below the left hand to above it."
+    },
+    {
+      "left": "The thumb fully extends by mid-sequence. The other four fingers display significant movement, transitioning from extended states to various hyperextended postures, particularly at their base joints. The wrist travels upward until mid-sequence, then moves downward while shifting backward.",
+      "right": "The hand shows a general relaxation, with the hyperextended index, middle, and ring fingers moving towards more natural extended and bent poses. Towards the end, the fingers begin to spread. The wrist drifts forward throughout and drops down at the end.",
+      "two_hands_relation": "There is no contact between the hands. Mid-sequence, the palms rapidly approach one another before separating. The right hand is always to the right of the left, and it travels from being below the left hand to above it."
+    },
+    {
+      "left": "The thumb extends from fully bent to fully extended between frames 7 and 43. A key feature is the extensive hyperextension across the other fingers: the index and middle finger base joints hyperextend after frame 33, while the middle finger's distal joint remains hyperextended throughout. The ring and pinky fingers also move into and out of hyperextended states. Spacing between fingers is dynamic, with the ring and pinky fingers spreading apart early on, followed by changes between the other fingers. The wrist moves up until frame 27 and then down until the end, while moving backward for the first 41 frames.",
+      "right": "The fingers largely transition out of hyperextension. The base joints of the index, middle, and ring fingers move from hyperextended to less extreme poses starting around frame 33-35. The index and pinky fingers maintain hyperextension at their middle joints throughout. In the second half, the spacing between the index and middle fingers opens, while the middle, ring, and pinky fingers close together. The wrist moves forward slowly for most of the sequence and then quickly moves down from frame 50 to 60.",
+      "two_hands_relation": "The hands do not touch. A primary interaction is the rapid approach of the palms between frames 39 and 47, followed by a rapid separation. Their relative positions shift significantly: the right hand moves from being vertically aligned with the left to below it, and then moves to a position above it between frames 28 and 56. It also moves from an aligned front-back position to being in front of the left hand."
+    }
+  ]
+}

annotations/ARCTIC_text/arctic_s01_phone_use_01_viz_3.json

@@ -0,0 +1,33 @@
+{
+  "seq_name": "arctic_s01_phone_use_01_viz",
+  "frame_start": 210,
+  "frame_end": 270,
+  "split": "train",
+  "annotations": [
+    {
+      "left": "The hand shows complex finger motions, including notable hyperextension in the middle and pinky fingers. The wrist moves slowly upwards and forwards, then backwards.",
+      "right": "Most fingers start in a hyperextended position and move towards a more natural, extended state. The fingers dynamically spread apart and come together.",
+      "two_hands_relation": "The hands move far apart and then get closer again, while the right hand moves from a position above the left hand to below it."
+    },
+    {
+      "left": "The middle finger remains hyperextended throughout, and other fingers, like the pinky, also display hyperextension. The thumb performs a distinct open-and-close motion.",
+      "right": "The fingers transition from a hyperextended posture to an extended one. The spacing between adjacent fingers changes dynamically throughout the sequence.",
+      "two_hands_relation": "The distance between the palms increases and then decreases. The right hand, initially above the left, descends to a position below it."
+    },
+    {
+      "left": "The thumb straightens from a bent position and then bends again. The middle finger's middle and tip joints are constantly hyperextended, while the pinky finger's base joint becomes hyperextended towards the end. Initially, the index and middle fingers spread apart. The wrist drifts slowly upwards while moving left and forward, then right and back.",
+      "right": "At the start, the index, middle, ring, and pinky fingers are all hyperextended at their base joints, gradually moving to a straighter pose. The ring and pinky fingers also show sustained hyperextension in their middle joints. Finger spacing is active, with fingers repeatedly spreading and closing.",
+      "two_hands_relation": "The hands, starting at a medium distance, move far apart and then return to a medium distance. The right hand is always to the right of and in front of the left, but its vertical position changes from being above the left to below it."
+    },
+    {
+      "left": "Several fingers exhibit hyperextension: the middle finger's distal joints are constantly hyperextended, while the ring and pinky fingers transition out of and into hyperextended states. The thumb opens and closes once. The index and middle fingers spread apart at the beginning, followed by the middle and ring fingers spreading later. The wrist moves slowly upward for most of the motion.",
+      "right": "The hand's initial posture is characterized by hyperextension at the base of all four fingers, which resolves into a more extended state by mid-sequence. Constant hyperextension is also noted in the middle joints of the ring and pinky fingers. All adjacent finger pairs dynamically open and close in sequence.",
+      "two_hands_relation": "The separation between the hands increases rapidly during the first half of the sequence and then decreases. Concurrently, the right hand inverts its vertical position relative to the left, moving from high to low."
+    },
+    {
+      "left": "The thumb straightens from a fully bent state between frames 2 and 19, then bends again by frame 36. Hyperextension is a major feature: the middle finger's PIP and DIP joints are hyperextended throughout, and the pinky's base joint moves into hyperextension by frame 58. The index and ring fingers also resolve from an initial hyperextended state. Spacing between the index and middle fingers opens from frame 0 to 12, while the middle and ring fingers spread apart from frame 23 to 58. The wrist moves slowly up until frame 48, while simultaneously moving left and forward until frame 21, and then right and back.",
+      "right": "Initially, the index, middle, ring, and pinky fingers are all hyperextended at the MCP joint, a state they all move out of by mid-sequence. The ring and pinky PIP joints remain hyperextended for the entire duration. Finger spacing is highly dynamic: the middle-ring and ring-pinky pairs open and close by frame 15, and the index-middle pair opens and closes between frames 9 and 34. The wrist moves from right to left and generally downwards.",
+      "two_hands_relation": "The palms begin at a medium distance, move rapidly apart to a far distance by frame 26, and then move back to a medium distance by frame 41. The right hand remains consistently to the right of and in front of the left hand. A significant vertical shift occurs as the right hand moves from a position above the left to below it over the course of frames 0 to 52."
+    }
+  ]
+}

annotations/ARCTIC_text/arctic_s01_scissors_grab_01_viz_4.json

@@ -0,0 +1,33 @@
+{
+  "seq_name": "arctic_s01_scissors_grab_01_viz",
+  "frame_start": 510,
+  "frame_end": 570,
+  "split": "train",
+  "annotations": [
+    {
+      "left": "Several fingers are held in a hyperextended state. The fingers generally straighten while the index and middle fingers first move together and then apart.",
+      "right": "The ring and pinky fingers are held in a static hyperextended pose. Other fingers perform minor bending motions and draw closer to each other.",
+      "two_hands_relation": "The hands start far apart and move closer, with the right hand shifting forward from behind the left."
+    },
+    {
+      "left": "The hand features prominent hyperextension in the middle, ring, and pinky fingers. Most fingers straighten during the first half of the motion, and the wrist moves right and down.",
+      "right": "The ring and pinky fingers maintain a hyperextended state throughout. The index and middle fingers close together as they undergo bending motions, while the wrist moves down and then up.",
+      "two_hands_relation": "The distance between the palms decreases significantly. The right hand moves from a position behind the left to become aligned with it."
+    },
+    {
+      "left": "Hyperextension is present in the index, middle, ring, and pinky fingers. During the first half, the middle, ring, and pinky fingers straighten at their base joints. The space between the index and middle fingers closes at the start, then reopens later in the sequence.",
+      "right": "The index finger straightens from a hyperextended state at its base, while the ring and pinky fingers remain statically hyperextended. The thumb and middle finger bend slightly. The spaces between the index, middle, and ring fingers all close.",
+      "two_hands_relation": "The palms approach each other, moving from a far to a medium distance. The right hand, always to the right of the left, moves forward from a posterior position to align with the left hand front-to-back."
+    },
+    {
+      "left": "A key feature is hyperextension: the middle finger's middle joint is constantly hyperextended, while the index, ring, and pinky fingers also display it. The primary action is the fingers straightening from a bent posture. The wrist moves right and down before reversing its vertical motion upwards towards the end.",
+      "right": "The ring and pinky fingers are held in a constant hyperextended pose at their middle joints. The index finger begins hyperextended at its base and straightens. The initially open spaces between the index, middle, and ring fingers close during the motion. The wrist moves down and then up.",
+      "two_hands_relation": "The hands move closer together through most of the sequence. They remain vertically aligned while the right hand moves forward from behind the left to become level with it on the front-back axis."
+    },
+    {
+      "left": "The middle finger's PIP joint remains hyperextended throughout. Early on, the index finger's PIP joint also moves into hyperextension by frame 25. The middle, ring, and pinky fingers straighten at their base joints by frame 32. The space between the index and middle fingers closes by frame 15 and then reopens from frame 23 to 49. The wrist moves right until frame 42, simultaneously moving down until frame 37, after which it moves up.",
+      "right": "The ring and pinky fingers maintain constant hyperextension at their PIP joints. The index finger's base joint straightens from a hyperextended state between frames 10 and 46, while its other joints bend then straighten. The thumb's base joint bends from frame 25 to 44. Spacing closes between the index and middle fingers by frame 41 and between the middle and ring fingers by frame 36. The wrist moves down until frame 41, then moves up, while also moving forward slowly from frame 29.",
+      "two_hands_relation": "The palms move from a far to a medium distance between frames 5 and 43. Throughout the motion, the right hand is positioned to the right of the left and remains vertically aligned with it. The right hand's relative position shifts from being behind the left to becoming aligned with it on the front-back axis, a change occurring between frames 13 and 60."
+    }
+  ]
+}

annotations/ARCTIC_text/arctic_s01_waffleiron_use_01_viz_6.json

@@ -0,0 +1,33 @@
+{
+  "seq_name": "arctic_s01_waffleiron_use_01_viz",
+  "frame_start": 390,
+  "frame_end": 450,
+  "split": "train",
+  "annotations": [
+    {
+      "left": "Most fingers are held in a hyperextended state. The thumb straightens from a bent pose and then bends again.",
+      "right": "The hand is highly active, with all fingers moving dynamically between bent, straight, and hyperextended postures.",
+      "two_hands_relation": "The hands quickly move closer at the beginning, with the right hand staying above and to the right of the left."
+    },
+    {
+      "left": "The four main fingers exhibit widespread and persistent hyperextension. The thumb performs a straightening and subsequent bending motion.",
+      "right": "There is complex motion across all fingers, which frequently enter hyperextended states before returning to straight or bent positions. The wrist is very mobile.",
+      "two_hands_relation": "The palms rapidly transition from a far to a medium distance at the start. The right hand moves from a position in front of the left to behind it."
+    },
+    {
+      "left": "The index, ring, and pinky fingers are held in a predominantly hyperextended pose, and the middle finger also moves into hyperextension. The thumb straightens from a bent position mid-sequence, then bends again at the end. The spacing between the middle, ring, and pinky fingers first closes, then opens.",
+      "right": "The hand displays continuous motion, with the thumb, index, and pinky fingers moving into and out of hyperextension. The other fingers also straighten and hyperextend at various joints. The fingers tend to close together during the sequence.",
+      "two_hands_relation": "At the start, the hands quickly reduce their distance. The right hand remains consistently above and to the right of the left, while its front-back position shifts, first moving behind the left hand and then moving forward again."
+    },
+    {
+      "left": "Hyperextension is the dominant feature, with the index finger constantly hyperextended, and the middle, ring, and pinky fingers also showing persistent hyperextension. The initially bent thumb straightens out around mid-sequence before re-bending. The wrist drifts to the right.",
+      "right": "All fingers show dynamic movement, including significant hyperextension. Notably, the pinky finger moves from fully bent to hyperextended, while the thumb and index fingers also perform distinct hyperextension motions. The wrist is highly mobile, moving up, down, left, right, forward, and back.",
+      "two_hands_relation": "The distance between the palms decreases rapidly at the beginning of the motion. The right hand is consistently positioned above and to the right of the left as it moves from in front of the left hand to behind it, before starting to move forward again."
+    },
+    {
+      "left": "The index finger is held in a constant state of hyperextension at its base and middle joints. The ring and pinky fingers are also predominantly hyperextended. The middle finger's base joint moves into hyperextension by frame 25. The thumb, starting bent, straightens out between frames 8 and 47, then begins to bend again towards the end. The pinky's base joint bends then straightens over the course of the motion. Spacing between the middle, ring, and pinky fingers first closes between frames 22 and 49, and then opens again.",
+      "right": "This hand is extremely active with widespread hyperextension. The thumb's base joint hyperextends from frame 7 to 34, while its tip bends then straightens. The index finger's base joint hyperextends until frame 35. The pinky's base joint transitions rapidly from fully bent to hyperextended by frame 33 and then straightens. The wrist moves dynamically: initially left, back, and up, then shifts right, forward, and down, before moving up again.",
+      "two_hands_relation": "There is no contact between the hands. During the first part of the sequence, from frame 0 to 22, the palms rapidly move from a far to a medium distance. Throughout the motion, the right hand is positioned to the right of and above the left hand. The right hand's relative depth changes, moving from in front of the left to behind it by frame 25, and then moving forward for the remainder of the sequence."
+    }
+  ]
+}

annotations/ARCTIC_text/arctic_s01_waffleiron_use_02_viz_9.json

@@ -0,0 +1,33 @@
+{
+  "seq_name": "arctic_s01_waffleiron_use_02_viz",
+  "frame_start": 570,
+  "frame_end": 630,
+  "split": "train",
+  "annotations": [
+    {
+      "left": "The hand is held in a tense, hyperextended pose with the thumb bent. The fingers progressively spread apart while the wrist moves up, back, and left.",
+      "right": "Most fingers are hyperextended. The thumb bends inward as the wrist moves up, back, and to the right.",
+      "two_hands_relation": "The hands start near each other and quickly move far apart."
+    },
+    {
+      "left": "With the thumb held fully bent, the other four fingers maintain a hyperextended posture. The spaces between the fingers gradually open. The wrist executes a sweeping motion upwards, backwards, and to the left.",
+      "right": "The fingers are held in a tense, hyperextended state, while the thumb bends during the first half of the motion. The wrist moves rapidly upwards, backwards, and to the right.",
+      "two_hands_relation": "The two hands begin close together and separate at a fast speed."
+    },
+    {
+      "left": "The thumb is static and fully bent. The index, ring, and pinky fingers are held in a constant state of hyperextension, while the middle finger also transitions into a hyperextended pose. The fingers, initially closed, all spread open over the course of the motion. The wrist moves fast to the left and back, and up at a medium speed.",
+      "right": "The thumb progressively bends, while the other four fingers transition into or maintain a state of hyperextension. At the start, the space between the middle and ring fingers closes. The wrist moves quickly upwards, backwards, and to the right.",
+      "two_hands_relation": "The primary interaction is the rapid separation of the hands from a near to a far position. The right hand starts above and in front of the left hand, and moves to a position behind and vertically aligned with it."
+    },
+    {
+      "left": "The thumb remains fully bent. A notable hyperextension is maintained in the index finger's middle joint, and the ring and pinky fingers are also constantly hyperextended. The fingers spread apart throughout the sequence. The entire hand travels in a fast arc leftwards and backwards, while rising.",
+      "right": "The hand displays widespread hyperextension across all four fingers, with most joints either starting in or moving into this state. In contrast, the thumb bends steadily from an extended pose. The wrist moves fast in an upward, backward, and rightward direction.",
+      "two_hands_relation": "The hands begin near each other and move apart at high speed. Throughout this separation, the right hand, which is always to the right of the left, moves from a forward to a rear position relative to the left hand."
+    },
+    {
+      "left": "The thumb is held fully bent. The index finger maintains a unique pose with its middle (PIP) joint hyperextended. The ring and pinky fingers are also constantly hyperextended at their base and middle joints. Throughout the first half, the middle finger's base joint straightens from a hyperextended state while its other joints become hyperextended. The fingers progressively spread apart at a medium speed. The wrist moves fast to the left and back, while moving up at a medium speed for the entire duration.",
+      "right": "The thumb bends from fully extended to fully bent during the first 42 frames. The index, middle, and ring fingers all transition from fully extended to hyperextended at their base joints. Most other joints on these fingers, as well as the pinky, are held in a constant state of hyperextension. The space between the middle and ring fingers closes between frames 7 and 18. The wrist executes a fast trajectory upwards, backwards, and to the right.",
+      "two_hands_relation": "The distance between the palms increases rapidly, moving from near to far over the 60-frame sequence. The right hand is always to the right of the left. At the start, the right hand moves quickly from being in front of the left hand to behind it (frames 0-35) and simultaneously moves from a position above the left to one of vertical alignment (frames 0-38)."
+    }
+  ]
+}

annotations/ARCTIC_text/arctic_s02_capsulemachine_use_02_viz_1.json

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+{
+  "seq_name": "arctic_s02_capsulemachine_use_02_viz",
+  "frame_start": 270,
+  "frame_end": 330,
+  "split": "train",
+  "annotations": [
+    {
+      "left": "The fingers straighten and hyperextend, while the wrist moves slowly upwards and to the right.",
+      "right": "All fingers, including the thumb, display significant hyperextension. The wrist moves upwards.",
+      "two_hands_relation": "The hands remain far apart and do not interact throughout the motion."
+    },
+    {
+      "left": "The hand opens as all four fingers move into a hyperextended state. The space between the index and middle fingers first closes, then opens.",
+      "right": "The thumb and all fingers exhibit hyperextension at various joints. The index and middle fingers gradually spread apart.",
+      "two_hands_relation": "A large distance is maintained between the hands, with the right hand consistently positioned to the right and in front of the left."
+    },
+    {
+      "left": "The dominant motion involves the four fingers straightening from bent positions into hyperextension. The thumb also straightens. The wrist performs a slow, continuous drift upwards and to the right, moving back and then forward.",
+      "right": "The thumb and all four fingers show pronounced hyperextension, mostly occurring in the first half of the sequence. As the fingers extend, the space between the index and middle fingers opens up. The wrist moves generally up and forward.",
+      "two_hands_relation": "The hands are far apart and do not interact. Their relative horizontal position is static, but mid-sequence, the right hand moves from being vertically aligned with the left to a position below it."
+    },
+    {
+      "left": "The hand's posture is defined by widespread hyperextension across the four fingers' middle and base joints. The index finger displays a complex pose, bending at its base while its middle joint hyperextends. The thumb extends, and the wrist moves up and to the right.",
+      "right": "All fingers undergo hyperextension. The thumb's base joint hyperextends and then returns, while the four main fingers hyperextend at their middle joints. The hand opens as the index and middle fingers spread. The wrist travels up, forward, and oscillates side-to-side.",
+      "two_hands_relation": "There is no physical interaction as the hands stay far apart. The right hand remains to the right and in front of the left, and it shifts to a position below the left hand as the motion progresses."
+    },
+    {
+      "left": "Throughout the motion, the fingers move towards extension and hyperextension. Specifically, the middle joints of the index, middle, and pinky fingers, and the base joints of the ring and pinky fingers, enter a hyperextended state, mostly within the first half of the sequence. The space between the index and middle fingers closes by frame 21 and then reopens. The wrist slowly moves right and upwards throughout the entire sequence, while also moving back until frame 33 and then quickly forward.",
+      "right": "All fingers exhibit hyperextension. The thumb's base joint hyperextends fast until frame 31 before returning to an extended state. The middle joints of the index, middle, ring, and pinky fingers all hyperextend by frame 28. Concurrently, the spacing between the index and middle fingers opens steadily. The wrist moves upwards for the duration, shifts from right to left then back to right, and moves forward at a fast speed before retracting.",
+      "two_hands_relation": "The hands maintain a far distance at all times, with no contact or near-contact events. The right hand is consistently positioned to the right of and in front of the left hand. A relative vertical shift occurs between frames 13 and 50, as the right hand moves from being aligned with the left hand to a position below it."
+    }
+  ]
+}

annotations/ARCTIC_text/arctic_s02_espressomachine_use_01_viz_1.json

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+{
+  "seq_name": "arctic_s02_espressomachine_use_01_viz",
+  "frame_start": 450,
+  "frame_end": 510,
+  "split": "train",
+  "annotations": [
+    {
+      "left": "The fingers spread apart while exhibiting widespread hyperextension.",
+      "right": "The thumb bends and then straightens again, while the other fingers also move into hyperextended positions.",
+      "two_hands_relation": "The hands stay far apart. The right hand moves up and then down relative to the left."
+    },
+    {
+      "left": "The hand opens as the fingers spread, with all four fingers transitioning into various hyperextended states.",
+      "right": "The primary action is the thumb bending completely before extending. The other fingers also display significant hyperextension.",
+      "two_hands_relation": "A large distance is maintained between the hands. Vertically, the right hand rises above the left and then returns to its initial lower position."
+    },
+    {
+      "left": "The thumb is held partially bent, while the index, middle, ring, and pinky fingers all move into complex hyperextended postures. The index and middle fingers spread apart during the first half of the motion. The wrist slowly drifts forward and to the left.",
+      "right": "The thumb quickly bends and then extends at a slower pace. The index, ring, and pinky fingers all have joints that enter a hyperextended state. Early in the sequence, the index and middle fingers close together. The wrist moves up and forward before moving down and back.",
+      "two_hands_relation": "The hands remain far apart, with the right hand consistently positioned to the right of and in front of the left. The right hand moves from below the left to above it and then back down again."
+    },
+    {
+      "left": "With the thumb held static in a partially bent pose, all other fingers undergo movements involving hyperextension. The spacing between the index and middle fingers, and middle and ring fingers, increases early on. The wrist performs a slow, continuous move forward and to the left.",
+      "right": "The thumb executes a single, prominent motion of bending and unbending. The other four fingers show hyperextension, particularly at their middle joints. The initially open space between the index and middle fingers closes quickly at the beginning. The wrist traces an arc, moving up and forward, then down and back.",
+      "two_hands_relation": "There is no interaction between the hands. Their only significant relative motion is vertical, where the right hand quickly rises above the left in the first half of the sequence and then lowers in the second half."
+    },
+    {
+      "left": "The thumb remains in a partially bent state. All four other fingers display extensive hyperextension: for example, the index finger's middle joint is constantly hyperextended, while its base joint also moves into hyperextension until frame 31. The spacing between the index and middle fingers opens until frame 25. The wrist drifts forward slowly from frame 13 to 43 and moves left from frame 22 to 58.",
+      "right": "The thumb's base joint bends fully at a fast speed between frames 7 and 32, then extends at a medium speed for the rest of the motion. The index, ring, and pinky fingers all have joints that move into a hyperextended state, starting early in the sequence. The spacing between the index and middle fingers closes fast between frames 8 and 21. The wrist moves upward until frame 40, then downward; it also moves forward until frame 28, then backward.",
+      "two_hands_relation": "Throughout the motion, the hands remain far from each other, with the right hand consistently to the right of and in front of the left. Their relative vertical position changes dynamically: the right hand moves from a position below the left to above it between frames 0 and 26, then moves back down from frame 26 to the end."
+    }
+  ]
+}

annotations/ARCTIC_text/arctic_s02_ketchup_use_04_viz_5.json

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+{
+  "seq_name": "arctic_s02_ketchup_use_04_viz",
+  "frame_start": 510,
+  "frame_end": 570,
+  "split": "train",
+  "annotations": [
+    {
+      "left": "The fingers exhibit significant hyperextension, particularly the index, ring, and pinky fingers, while the wrist moves up and then left.",
+      "right": "The hand remains mostly still with fingers extended, except for a minor movement in the pinky towards the end.",
+      "two_hands_relation": "The right thumb moves in to make contact with the left palm during the second half of the sequence."
+    },
+    {
+      "left": "Multiple fingers, especially the pinky, transition into or maintain hyperextended states. The fingers also change their spacing, closing together and then spreading apart.",
+      "right": "The hand is largely static with straight fingers. Late in the motion, the pinky finger simultaneously hyperextends at its base and bends at its middle joint.",
+      "two_hands_relation": "A key interaction occurs as the right thumb approaches and makes contact with the left palm towards the end."
+    },
+    {
+      "left": "The thumb is held partially bent. The index, ring, and pinky fingers all display significant hyperextension at their base joints, especially towards the end of the sequence. The spacing between fingers changes, with the index and middle fingers first closing and then opening. The wrist moves up, forward, and right, then reverses direction to move down, back, and left.",
+      "right": "The thumb, index, and ring fingers remain fully extended and stationary. The middle finger bends slightly at the very beginning. Towards the end, the pinky finger's base joint hyperextends while its middle joint bends.",
+      "two_hands_relation": "After an initial period of separation, the right thumb tip moves towards the left palm, making contact by the end of the motion. The right hand also shifts from a position in front of the left hand to behind it."
+    },
+    {
+      "left": "Several fingers display complex postures involving hyperextension. The index finger's base joint moves from hyperextended to straight and back again. The ring and pinky fingers also end in a hyperextended state. Finger spacing is dynamic, with fingers closing and opening in pairs. The wrist moves in a continuous arc, initially moving up and right before slowly moving down and left.",
+      "right": "With the exception of a brief, fast bend in the middle finger at the start, the hand is mostly inactive until the end, when the pinky finger's base hyperextends. Most fingers remain close together.",
+      "two_hands_relation": "The primary interaction is the right thumb moving to make contact with the left palm, which begins mid-sequence. Spatially, the right hand, which is always to the right of the left, moves from being in front of the left to behind it and from being vertically aligned to below it."
+    },
+    {
+      "left": "The thumb remains partially bent. A key feature is widespread hyperextension: the index finger's base joint starts hyperextended, straightens by frame 36, then hyperextends again. The pinky's base joint is hyperextended throughout. The ring and middle finger bases also hyperextend towards the end of the sequence. The ring finger's middle joint transitions from partially bent to hyperextended. The wrist moves right until frame 15, then slowly left; forward until frame 18, then slowly back; and up until frame 36, then down.",
+      "right": "The hand is mostly static with fully extended fingers. The middle finger's base joint bends quickly at the start (frames 0-10). A notable event occurs late in the sequence (frames 45-56) when the pinky's base joint hyperextends while its middle joint simultaneously bends.",
+      "two_hands_relation": "The most significant event is the right thumb tip making contact with the left palm. This approach begins at frame 30 and is completed by frame 60. During the first half of the motion, the right hand's relative position shifts, moving from in front of the left hand to behind it by frame 20, and from being vertically aligned to a position below the left hand by frame 37."
+    }
+  ]
+}

annotations/ARCTIC_text/arctic_s02_laptop_grab_01_viz_4.json

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+{
+  "seq_name": "arctic_s02_laptop_grab_01_viz",
+  "frame_start": 570,
+  "frame_end": 630,
+  "split": "train",
+  "annotations": [
+    {
+      "left": "The fingers hyperextend at the base and then shift to a partially bent pose. The wrist drifts slowly upwards and to the right.",
+      "right": "The fingers, many starting in a hyperextended state, gradually bend while spreading apart. The wrist moves upwards and forwards.",
+      "two_hands_relation": "The hands stay far apart and vertically aligned, with the right hand moving from behind to in front of the left hand later in the sequence."
+    },
+    {
+      "left": "The hand opens with all four fingers hyperextending at their base joints, then transitions to a partially bent posture. The thumb straightens over time.",
+      "right": "The hand relaxes from a hyperextended finger posture. The index finger stays static and hyperextended, while other fingers bend and spread out.",
+      "two_hands_relation": "The hands do not interact. Towards the end, the right hand shifts forward relative to the left, while always remaining to its right."
+    },
+    {
+      "left": "Most fingers move from an extended state into a hyperextended pose at their base joints, and then quickly transition to a partially bent state after the midpoint. The thumb straightens in the second half. The index and middle fingers first close the space between them, then open it up again.",
+      "right": "The index finger is held in a static, hyperextended pose. The middle, ring, and pinky fingers all move from a hyperextended state to a more relaxed, partially bent one. All fingers spread apart from each other as the motion progresses.",
+      "two_hands_relation": "The hands remain distant. Their relative front-back position changes as the right hand, initially behind the left, moves to a position in front of it in the latter half of the sequence. They stay vertically aligned."
+    },
+    {
+      "left": "Initially, the index, middle, ring, and pinky fingers hyperextend at their base. Mid-sequence, these fingers quickly adopt a partially bent shape. Various other finger joints also display hyperextension early on. The wrist performs a slow, continuous upward and rightward movement.",
+      "right": "With the notable exception of the statically hyperextended index finger, the other fingers gradually move out of various hyperextended states into partially bent ones. The thumb also straightens through the middle of the sequence. The fingers spread apart, opening the spaces between them.",
+      "two_hands_relation": "The hands maintain a large distance throughout. The right hand is always to the right of the left and at the same height, but it moves quickly from a posterior to an anterior position relative to the left hand towards the end."
+    },
+    {
+      "left": "During the first half (until frame 32), the index, middle, ring, and pinky fingers transition from extended to a hyperextended state at their base (MCP) joints. After this point, these fingers move quickly into a partially bent state. The thumb's tip joint straightens from a partially bent pose from frame 30 onwards. The spacing between the index and middle fingers closes and then reopens, while the middle and ring fingers spread apart mid-sequence. The wrist moves slowly but steadily up and to the right throughout the motion.",
+      "right": "The index finger remains static, with its middle (PIP) joint hyperextended for the entire duration. The middle, ring, and pinky fingers all begin in states of hyperextension and gradually move towards a partially bent posture by the end of the sequence. The thumb straightens out by frame 44. Concurrently, the spaces between all adjacent fingers spread open at a medium speed. The wrist moves upwards, forwards, and, after frame 38, to the right.",
+      "two_hands_relation": "The hands never approach each other, maintaining a far distance. They remain vertically aligned, and the right hand is always to the right of the left. The only change in their relative positioning occurs between frames 34 and 60, where the right hand moves at a fast speed from being behind the left hand to being in front of it."
+    }
+  ]
+}

annotations/ARCTIC_text/arctic_s02_microwave_grab_01_viz_3.json

@@ -0,0 +1,33 @@
+{
+  "seq_name": "arctic_s02_microwave_grab_01_viz",
+  "frame_start": 450,
+  "frame_end": 510,
+  "split": "train",
+  "annotations": [
+    {
+      "left": "The hand opens from an initial pose where all four fingers are hyperextended at their base, gradually moving to a more neutral state. The wrist drifts downwards and to the left.",
+      "right": "The fingers, some exhibiting hyperextension, gradually straighten and unbend. The wrist moves downwards.",
+      "two_hands_relation": "The hands remain far apart and do not interact."
+    },
+    {
+      "left": "All four fingers start hyperextended at the base and progressively bend. The pinky finger also performs a bending and straightening motion. The wrist moves down and shifts horizontally.",
+      "right": "The fingers gradually straighten from a bent posture, with multiple joints showing states of hyperextension throughout the movement. Finger spacing changes mid-sequence.",
+      "two_hands_relation": "A constant, distant spatial relationship is maintained between the hands."
+    },
+    {
+      "left": "The index, middle, ring, and pinky fingers all begin in a hyperextended state at their base joints and move to a more bent or extended position. The index finger is also hyperextended at its middle joint initially. Mid-sequence, the ring and pinky fingers spread apart then close.",
+      "right": "The thumb and all four fingers transition from bent to more extended postures. This process features notable hyperextension in the index, middle, ring, and pinky fingers at various joints. The spacing between the middle, ring, and pinky fingers opens then closes.",
+      "two_hands_relation": "The hands stay far from each other, with the right hand consistently positioned to the right of and in front of the left hand."
+    },
+    {
+      "left": "The primary motion involves the four main fingers moving out of a hyperextended state at their base joints. The thumb and pinky fingers also straighten over the course of the motion. The wrist moves consistently downwards, while also moving right and then left. The ring and pinky fingers temporarily open up.",
+      "right": "The initially bent thumb and fingers all move to a more extended state. This straightening motion involves several joints passing through hyperextension, such as the index, ring, and pinky. The middle-to-ring and ring-to-pinky finger gaps change dynamically during the sequence.",
+      "two_hands_relation": "There is no interaction between the hands. They maintain a fixed relative orientation and a far distance for the entire duration."
+    },
+    {
+      "left": "At the start, the index, middle, ring, and pinky fingers are all hyperextended at their base (MCP) joints, and they gradually bend throughout the sequence. The index finger's middle (PIP) joint also moves from hyperextended to fully extended. The pinky finger's middle joint bends and extends twice in the latter half of the motion. Between frames 17 and 46, the space between the ring and pinky fingers opens and then closes. The wrist moves down, initially shifting right until frame 14, then moving left.",
+      "right": "The thumb unbends, becoming fully extended towards the end. All four fingers also straighten out from initially bent positions, a movement characterized by extensive hyperextension. The index, middle, and ring fingers all resolve from a hyperextended state in their middle or distal joints. The pinky's base and middle joints both enter and exit hyperextension. The space between the middle and ring fingers opens then closes, after which the ring and pinky fingers move together. The wrist moves down and forward, then rapidly shifts backward after frame 37.",
+      "two_hands_relation": "Throughout the entire 60-frame sequence, the two hands maintain a far distance from each other and do not interact. Their relative position is constant: the right hand is always to the right of and in front of the left hand, and they remain vertically aligned."
+    }
+  ]
+}

annotations/ARCTIC_text/arctic_s02_notebook_use_01_viz_1.json

@@ -0,0 +1,33 @@
+{
+  "seq_name": "arctic_s02_notebook_use_01_viz",
+  "frame_start": 330,
+  "frame_end": 390,
+  "split": "train",
+  "annotations": [
+    {
+      "left": "Most fingers progressively move into a state of hyperextension while the thumb remains bent. The wrist moves downwards.",
+      "right": "Multiple fingers display significant hyperextension. The wrist moves down, forward, and to the right.",
+      "two_hands_relation": "The hands stay far apart. The right hand moves from behind to beside the left hand, while always remaining above it."
+    },
+    {
+      "left": "All fingers, except for the statically bent thumb, transition into hyperextended postures. Towards the end, the index and middle fingers close together as the ring and pinky spread apart.",
+      "right": "Fingers are held in or move into hyperextended states. The spacing between the ring and pinky fingers closes and then re-opens. The wrist moves steadily.",
+      "two_hands_relation": "The two hands maintain a distant and fixed vertical relationship, with the right hand moving rightward and forward relative to the left."
+    },
+    {
+      "left": "The thumb remains partially bent. All other fingers move from extended postures into various states of hyperextension, a change that occurs primarily in the second half of the motion. The wrist performs a continuous downward movement. Late in the sequence, the space between the index and middle fingers closes, while the space between the ring and pinky opens.",
+      "right": "The thumb is held in a fixed pose. The index and middle fingers have hyperextended middle joints throughout. The ring and pinky fingers also hyperextend dynamically. The wrist moves continuously forward, right, and down. Mid-sequence, the ring and pinky fingers move together and then spread apart again.",
+      "two_hands_relation": "The hands remain far apart with no interaction. The right hand, always positioned above the left, shifts its relative position from being aligned to the right, and from behind to aligned front-to-back."
+    },
+    {
+      "left": "A defining feature is the progressive hyperextension of the index, middle, ring, and pinky fingers, while the thumb stays bent. The index finger's base joint is hyperextended constantly. Later, the index and middle fingers move together fast, and the ring and pinky fingers spread apart. The wrist moves down.",
+      "right": "The index and middle fingers consistently maintain hyperextended middle joints. The ring finger's middle joint cycles from hyperextended to straight and back to hyperextended. The pinky finger also hyperextends. The wrist drifts steadily down, forward, and to the right.",
+      "two_hands_relation": "The hands never approach each other. The right hand starts behind the left and moves forward to become aligned, and also moves from a central position to the right of the left hand. Vertically, the right hand is always above the left."
+    },
+    {
+      "left": "The thumb is held partially bent throughout. The index finger's base joint is in a constant state of hyperextension, while its middle and distal joints also transition into hyperextension by frame 43. The middle, ring, and pinky fingers all move into hyperextended states at a fast speed after frame 28. Between frames 36 and 51, the spacing between the index and middle fingers closes rapidly. Concurrently, from frame 42 to 53, the ring and pinky fingers spread open. Starting at frame 18, the wrist moves down at a medium speed.",
+      "right": "The thumb is partially bent. The middle joints of the index and middle fingers are hyperextended throughout the entire sequence. The ring finger's middle joint moves from hyperextended to extended by frame 36, then quickly hyperextends again by frame 53. The pinky finger also moves into a hyperextended state. From frame 0 to 35, the spacing between the ring and pinky fingers closes and then re-opens. The wrist moves right, forward, and down at a medium speed.",
+      "two_hands_relation": "The hands maintain a far distance at all times. Their relative positioning changes: the right hand moves from being horizontally aligned with the left to its right side by frame 40. It also moves from behind the left hand to a front-back alignment by frame 48. Throughout the motion, the right hand is constantly positioned above the left hand."
+    }
+  ]
+}

annotations/ARCTIC_text/arctic_s04_box_use_01_viz_3.json

@@ -0,0 +1,33 @@
+{
+  "seq_name": "arctic_s04_box_use_01_viz",
+  "frame_start": 690,
+  "frame_end": 750,
+  "split": "train",
+  "annotations": [
+    {
+      "left": "The hand is held in a tense pose with all four fingers hyperextended and the thumb bent. The wrist moves quickly to the left.",
+      "right": "The fingers are held in a similar hyperextended state while the thumb curls inward. The wrist moves to the right.",
+      "two_hands_relation": "The hands remain far apart, moving away from each other horizontally."
+    },
+    {
+      "left": "The four main fingers are kept in a state of hyperextension. The wrist executes a continuous leftward sweep while also moving down and then up.",
+      "right": "The fingers maintain a hyperextended posture as the thumb bends. The wrist moves rightward, mirroring the left hand's down-then-up motion.",
+      "two_hands_relation": "The hands do not interact and maintain a large distance. The right hand is consistently positioned behind and to the right of the left."
+    },
+    {
+      "left": "The thumb is held in a bent position, while the other four fingers display significant hyperextension, particularly at their middle joints. The wrist moves rapidly leftward, while simultaneously moving forward then backward, and down then up.",
+      "right": "The thumb progressively bends inward during the first half of the sequence. The other fingers are held in a tense, hyperextended state. Mid-sequence, the pinky finger spreads away from the ring finger. The wrist moves right, down, and then up.",
+      "two_hands_relation": "The hands stay far apart. The right hand remains to the right of and behind the left hand, and it moves from being vertically aligned to a lower position before returning to alignment at the end."
+    },
+    {
+      "left": "The hand maintains a tense pose with a bent thumb and hyperextended fingers. The ring and pinky fingers increase their hyperextension at the base over time. The wrist's motion is a fast, constant sweep to the left, combined with a slow forward-then-fast backward and a medium down-then-fast up movement.",
+      "right": "Most fingers are held with constant hyperextension at the middle joints, while the thumb bends fully by mid-sequence. Towards the end, the ring and pinky fingers also hyperextend at their base joints. The wrist moves fast to the right and follows a down-then-up trajectory.",
+      "two_hands_relation": "There is no interaction as the hands remain far apart. Their relative spatial orientation is largely fixed, except for a vertical shift where the right hand temporarily moves below the left."
+    },
+    {
+      "left": "The thumb remains in a fixed bent posture. The other four fingers exhibit prominent hyperextension: the index and ring middle joints are constantly hyperextended, while the middle and pinky middle joints move into hyperextension. The ring and pinky base joints also gradually become hyperextended. The wrist moves fast and continuously to the left, while also moving slowly forward until frame 39 then quickly backward, and moving down at medium speed before rising fast from frame 33 to the end.",
+      "right": "The thumb's base joint bends fully by frame 30. The index, middle, and ring fingers' middle joints are constantly hyperextended, while the pinky's middle joint becomes hyperextended through the sequence. Late in the motion, the ring and pinky base joints also hyperextend. Spacing between the ring and pinky fingers opens from frame 27 to 53. The wrist moves rightward fast after frame 17, mirroring the left hand's trajectory by moving forward then backward, and down then upward toward the end.",
+      "two_hands_relation": "The hands remain far apart and never interact. The right hand is always positioned to the right of and behind the left hand. Vertically, the right hand begins aligned with the left, moves to a position below it between frames 4 and 51, and then returns to alignment by the end. The hands move apart horizontally while their front-back and up-down trajectories are synchronized."
+    }
+  ]
+}

annotations/ARCTIC_text/arctic_s04_capsulemachine_grab_01_viz_3.json

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+{
+  "seq_name": "arctic_s04_capsulemachine_grab_01_viz",
+  "frame_start": 630,
+  "frame_end": 690,
+  "split": "train",
+  "annotations": [
+    {
+      "left": "The four main fingers move from a straight position into a hyperextended state. The wrist moves upward and forward.",
+      "right": "The fingers straighten and some joints hyperextend. The wrist moves up and to the right.",
+      "two_hands_relation": "The hands remain far apart, with the right hand positioned above and to the right of the left."
+    },
+    {
+      "left": "All four fingers splay backward into hyperextension during the first half of the motion. The wrist traces an upward arc.",
+      "right": "The thumb straightens while other fingers also extend, with the index and pinky fingers entering a hyperextended state. The wrist moves right and up, then down.",
+      "two_hands_relation": "The hands maintain a significant distance and do not interact. The right hand is consistently higher than the left."
+    },
+    {
+      "left": "While the thumb remains fully extended, the index, middle, ring, and pinky fingers all move into hyperextended positions. Early on, the index and middle fingers move closer together. The wrist moves up, forward, and initially to the left.",
+      "right": "The thumb straightens over the sequence. The index finger's base joint hyperextends, while the pinky's base joint remains constantly hyperextended. The wrist moves broadly rightward, tracing an up-and-down path.",
+      "two_hands_relation": "The hands stay far apart. The right hand is always to the right of and above the left, and during the first half, it moves from being in front of the left hand to being aligned with it."
+    },
+    {
+      "left": "The hand's dominant feature is the progressive hyperextension of all four fingers at their base and middle joints. As this occurs, the spacing between the index and middle fingers closes, and later, the space between the ring and pinky opens. The wrist moves up and forward, shifting from left to right mid-sequence.",
+      "right": "The thumb straightens, the index finger hyperextends at its base, and the middle finger moves out of an initial hyperextended state. The pinky's base is held in hyperextension throughout. The wrist moves right, initially moving up and back before shifting down and forward.",
+      "two_hands_relation": "There is no interaction as the hands remain far apart. Their relative position is stable, except for the right hand moving from a forward position to align with the left hand on the front-back axis."
+    },
+    {
+      "left": "The thumb is held fully extended throughout. All four fingers transition from fully extended to hyperextended states at their MCP and PIP joints, mostly within the first 25 frames. The pinky's DIP joint is constantly hyperextended. From frames 3 to 13, the index and middle fingers move together, and from frames 19 to 40, the ring and pinky fingers spread apart. The wrist moves up and forward at a fast speed, initially moving left before changing direction to the right at frame 25.",
+      "right": "The thumb's IP joint gradually straightens from a partially bent state by frame 58. The index finger's MCP joint enters hyperextension between frames 12 and 39. The middle finger's PIP joint starts hyperextended and returns to fully extended by frame 53. The pinky's MCP joint remains hyperextended for the entire duration. Finger spacing is constant. The wrist moves right, while also moving up then down, and back then forward.",
+      "two_hands_relation": "The hands maintain a far distance and do not interact at any point. The right hand is consistently positioned above and to the right of the left hand. Along the front-back axis, the right hand starts in front of the left and moves to an aligned position by frame 32."
+    }
+  ]
+}

annotations/ARCTIC_text/arctic_s04_capsulemachine_use_02_viz_3.json

@@ -0,0 +1,33 @@
+{
+  "seq_name": "arctic_s04_capsulemachine_use_02_viz",
+  "frame_start": 510,
+  "frame_end": 570,
+  "split": "train",
+  "annotations": [
+    {
+      "left": "The fingers, many of which are initially hyperextended, close together. The thumb bends and then straightens.",
+      "right": "The fingers move into various states of hyperextension, while the thumb first extends and then bends back.",
+      "two_hands_relation": "The hands remain far apart, with the right hand consistently above and to the right of the left."
+    },
+    {
+      "left": "The hand shows extensive hyperextension across multiple finger joints, while the fingers simultaneously move from an open to a closed spacing. The wrist moves upwards.",
+      "right": "Most fingers transition into hyperextended postures. The thumb performs a slow bend after initially straightening.",
+      "two_hands_relation": "There is no interaction between the hands. Mid-sequence, the right hand moves from a position in front of the left to behind it."
+    },
+    {
+      "left": "The thumb bends fully before straightening towards the end. Multiple joints on the index, middle, ring, and pinky fingers exhibit hyperextension throughout the motion. The spacing between all fingers closes as the sequence progresses.",
+      "right": "The thumb extends fully at the beginning and then bends again later. The index, middle, and ring fingers all move into a hyperextended state at their base joints. The pinky finger shows a complex motion involving both bending and hyperextension.",
+      "two_hands_relation": "The hands maintain a far distance. The right hand is always positioned above and to the right of the left, and it moves from the front to the back of the left hand mid-sequence."
+    },
+    {
+      "left": "The thumb bends at both joints mid-sequence and then extends again. The other four fingers show significant hyperextension; for instance, the middle finger's base joint moves from hyperextended to bent, while its middle joint moves from bent to hyperextended. The fingers, initially spread, gradually close together.",
+      "right": "After the thumb straightens, it begins to bend again for the rest of the motion. The base joints of the index, middle, and ring fingers move into hyperextension. The pinky finger's base joint moves from hyperextended to bent and back, while its other joints also bend and hyperextend, creating a complex posture.",
+      "two_hands_relation": "The hands stay far apart. Their relative position changes as the right hand, which starts in front of the left, moves quickly behind it around the middle of the sequence."
+    },
+    {
+      "left": "Mid-sequence, the thumb bends fully before its tip joint extends towards the end. The hand exhibits widespread hyperextension: the index finger's base and middle joints move from hyperextended to extended. The middle finger's middle joint transitions from partially bent to hyperextended, while its base joint moves from hyperextended to bent. The ring and pinky fingers also display various hyperextended states. Spacing between all fingers transitions from open to closed. The wrist moves up initially, then left and forward, and finally right at the end.",
+      "right": "Initially, the thumb straightens from a bent posture by frame 18, then slowly bends again. The base joints of the index, middle, and ring fingers all transition into hyperextension. The pinky finger performs a complex motion: its base joint moves from hyperextended to bent and back, its middle joint bends fully, and its tip joint moves into hyperextension. The spacing between the ring and pinky fingers closes, opens, and closes again.",
+      "two_hands_relation": "The hands remain far from each other throughout the sequence. The right hand is always to the right of and above the left. A key spatial change occurs between frames 22 and 49, where the right hand moves fast from a position in front of the left hand to behind it."
+    }
+  ]
+}

annotations/ARCTIC_text/arctic_s04_espressomachine_grab_01_viz_2.json

@@ -0,0 +1,33 @@
+{
+  "seq_name": "arctic_s04_espressomachine_grab_01_viz",
+  "frame_start": 150,
+  "frame_end": 210,
+  "split": "train",
+  "annotations": [
+    {
+      "left": "All four fingers transition into a hyperextended state while the index, middle, and ring fingers close together. The wrist moves down and to the left.",
+      "right": "The fingers move into various hyperextended poses. The space between the middle and ring fingers first opens, then closes again towards the end. The wrist moves down and to the right.",
+      "two_hands_relation": "The hands remain far apart, with the right hand moving forward and down relative to the left hand."
+    },
+    {
+      "left": "The fingers, initially open, close together during the first half of the motion as they all adopt hyperextended postures. The thumb stays partially bent.",
+      "right": "Most fingers exhibit or move into hyperextension. The thumb straightens. Mid-sequence, the middle and ring fingers spread apart before closing again.",
+      "two_hands_relation": "There is no interaction between the hands. The right hand maintains its position to the right of the left hand, but moves from a vertically aligned position to one below the left hand."
+    },
+    {
+      "left": "The thumb remains in a partially bent state. All four fingers progressively move into hyperextended states. The index finger's base joint is hyperextended throughout, while its middle joint also becomes hyperextended. The space between the index, middle, and ring fingers closes by mid-sequence. The wrist moves left, back, and predominantly down.",
+      "right": "The thumb straightens over the course of the motion. The index, ring, and pinky fingers all display significant hyperextension. The space between the middle and ring fingers opens and then closes. The wrist moves right, forward, and rapidly downward.",
+      "two_hands_relation": "The hands stay far apart. Throughout the motion, the right hand is to the right of the left. It also moves from being aligned with the left hand to being in front of it, and later shifts from being above the left hand to below it."
+    },
+    {
+      "left": "All fingers, except the static, partially bent thumb, transition towards hyperextension. The index finger's base joint is hyperextended from the start. In the first half of the sequence, the initially open index, middle, and ring fingers close together. Towards the end, the middle and ring fingers quickly snap into further hyperextension.",
+      "right": "The hand displays widespread hyperextension across the fingers. The middle and ring fingers spread apart from the beginning until mid-sequence, then close again towards the end. The thumb gradually straightens. The wrist moves consistently down at a fast speed.",
+      "two_hands_relation": "The hands remain distant and do not interact. The right hand is always to the right of the left. Over the sequence, the right hand moves forward relative to the left, and in the latter half, it moves quickly from a position above the left hand to below it."
+    },
+    {
+      "left": "The thumb is held partially bent. A complex hyperextension occurs in the index finger: its base (MCP) joint is hyperextended throughout, and its middle (PIP) joint moves from extended to hyperextended. The middle, ring, and pinky fingers also all move into hyperextended states across their base joints over the sequence; their middle joints also snap into hyperextension quickly after frame 48. The spacing between the index and middle, and middle and ring fingers, closes by frame 32. The wrist moves left and back until frame 26, and moves down until frame 51, before a fast upward motion at the very end.",
+      "right": "The thumb extends from a partially bent state. The index and ring fingers maintain hyperextended poses. The middle finger's base joint straightens from a hyperextended state while its middle joint becomes hyperextended. The pinky also moves into hyperextension. The space between the middle and ring fingers opens from frame 4 to 30, and closes again from frame 44 to 60. The wrist moves right and forward for most of the sequence, while moving downward at a fast, constant speed.",
+      "two_hands_relation": "The two hands remain far apart with no interaction. The right hand is consistently positioned to the right of the left hand. Its relative position changes dynamically: it moves from being aligned with the left hand to being in front of it by frame 48, and from frame 39 to 60, it moves at a fast speed from a position above the left hand to below it."
+    }
+  ]
+}

annotations/ARCTIC_text/arctic_s04_ketchup_grab_01_viz_7.json

@@ -0,0 +1,33 @@
+{
+  "seq_name": "arctic_s04_ketchup_grab_01_viz",
+  "frame_start": 750,
+  "frame_end": 810,
+  "split": "train",
+  "annotations": [
+    {
+      "left": "The thumb tip repeatedly flexes and extends, while the other fingers move into and out of hyperextended states. The wrist moves dynamically in all directions.",
+      "right": "Most fingers individually move into hyperextended positions. The thumb remains still, and the spacing between fingers changes.",
+      "two_hands_relation": "The hands remain far apart but shift their relative positions, with the right hand moving from behind and below the left to in front of and above it."
+    },
+    {
+      "left": "The hand is very active, with the thumb bending and straightening multiple times and the other four fingers displaying various hyperextensions. The wrist moves continuously.",
+      "right": "The fingers exhibit a widespread pattern of hyperextension, particularly in the middle, ring, and pinky fingers. The thumb is static and partially bent.",
+      "two_hands_relation": "While maintaining a large distance, the hands change their spatial relationship, as the right hand moves forward and upward relative to the left."
+    },
+    {
+      "left": "The thumb tip performs three fast bend-and-extend cycles. The index, middle, and ring fingers all transition into hyperextended postures, with the middle finger being particularly active. Finger spacing changes repeatedly, especially between the index and middle fingers. The wrist moves left then right, and down then up.",
+      "right": "All four fingers display hyperextension at various points, starting with the ring and pinky fingers and followed by the middle and index fingers. The thumb stays partially bent. The spaces between the fingers open and close sequentially.",
+      "two_hands_relation": "The hands do not interact and stay far apart. Throughout the first half of the motion, the right hand rapidly moves from a position behind and below the left hand to one in front of and above it."
+    },
+    {
+      "left": "The thumb bends and unbends its tip rapidly and repeatedly. The index, middle, and ring fingers prominently hyperextend at their base and middle joints. Spacing between the index and middle fingers closes, opens, then closes again, while the ring and pinky fingers spread apart twice. The wrist traces a complex path, moving back and forth along all three axes.",
+      "right": "A wave of hyperextension moves through the fingers, affecting the ring, pinky, and middle fingers significantly. The index finger also briefly hyperextends. The thumb holds its pose. The fingers first close together, then the index, ring, and pinky spread out.",
+      "two_hands_relation": "There is no contact between the hands. Their relative orientation changes significantly as the right hand, always to the right of the left, moves from back to front and from down to up in the first half of the sequence."
+    },
+    {
+      "left": "The thumb's tip joint rapidly cycles between fully bent and fully extended three times from frame 22 onwards. The index, middle, and ring fingers all show significant hyperextension; for instance, the index finger's base and middle joints become hyperextended by frame 46. The pinky's tip joint also hyperextends. Spacing between the index and middle fingers cycles between open and closed, while the ring and pinky fingers spread apart between frames 14-29 and again between frames 37-43. The wrist moves left until frame 33 then right, down until frame 37 then up, and backward until frame 31 then forward.",
+      "right": "The thumb remains partially bent and extended. The other four fingers all undergo hyperextension. Notably, the middle finger's base joint hyperextends from frame 18 to 36, and the ring finger's base and middle joints both become hyperextended. The pinky's three joints all hyperextend at various times. Finger spacing shifts dynamically: the middle and ring fingers close by frame 22, the index and middle fingers spread then close, and the ring and pinky fingers spread apart from frame 9 to 46. The wrist moves left, forward, and upward until mid-sequence, then reverses its front-back and up-down motion.",
+      "two_hands_relation": "The hands maintain a far distance throughout the entire 60-frame sequence. Their relative position changes dynamically: the right hand is always to the right of the left, but it moves at a fast speed from being behind the left hand to in front of it by frame 31. Concurrently, it moves from a position below the left hand to above it by frame 30, before settling into vertical alignment towards the end."
+    }
+  ]
+}

annotations/ARCTIC_text/arctic_s04_laptop_grab_01_viz_6.json

@@ -0,0 +1,33 @@
+{
+  "seq_name": "arctic_s04_laptop_grab_01_viz",
+  "frame_start": 630,
+  "frame_end": 690,
+  "split": "train",
+  "annotations": [
+    {
+      "left": "At the start, the fingers hyperextend before gradually straightening. The wrist moves up and forward.",
+      "right": "The fingers exhibit complex motions, including hyperextension. Finger spacing changes frequently.",
+      "two_hands_relation": "The hands stay far apart, with the right hand moving from a position in front of and above the left to become aligned with it."
+    },
+    {
+      "left": "Most fingers display a pronounced hyperextension at the beginning of the sequence. The spacing between the index, middle, and ring fingers is dynamic.",
+      "right": "The fingers show varied movements, including hyperextension and repeated bending of the pinky. All adjacent fingers actively change their spacing.",
+      "two_hands_relation": "The hands do not interact. The right hand moves to become level with the left hand, both on the front-back and up-down axes."
+    },
+    {
+      "left": "At the beginning, the index, middle, ring, and pinky fingers all hyperextend, primarily at their base joints. Subsequently, they transition towards a more extended state. The wrist moves forward and up while shifting side to side. The spacing between the index, middle, and ring fingers opens and closes.",
+      "right": "The index finger's base hyperextends mid-sequence. The middle finger's middle joint bends sharply before hyperextending. The ring and pinky fingers also show hyperextension. The pinky's base joint bends and straightens repeatedly. All finger spacings are dynamic.",
+      "two_hands_relation": "The hands maintain a far distance. The right hand, always to the right of the left, moves from a position in front of and above the left to become aligned with it on both the front-back and up-down axes."
+    },
+    {
+      "left": "The motion begins with a rapid hyperextension of the four main fingers, which then gradually return to a straighter posture. The thumb slightly straightens at the beginning. The wrist moves generally forward and upward. Spacing between the first three fingers is active, opening and closing multiple times.",
+      "right": "The hand displays varied finger movements, including hyperextension in the index, middle, ring, and pinky fingers at different points. The middle finger executes a fast bend followed by a hyperextension. All adjacent fingers change their spacing relative to one another. The wrist moves back and forth.",
+      "two_hands_relation": "There is no contact between the hands. Their relative orientation changes as the right hand moves from being in front of and above the left to a position that is aligned on those axes."
+    },
+    {
+      "left": "The motion begins with rapid hyperextension at the base (MCP) joints of the index, middle, ring, and pinky fingers within the first 13 frames. The middle and ring fingers also hyperextend at their middle (PIP) joints. Over the course of the sequence, these fingers gradually relax back towards a fully extended state. The wrist moves right, then left, then right again, while consistently moving forward until frame 45 and upward for most of the duration. The spacing between the index and middle fingers closes, opens, then closes again, while the middle and ring finger spacing opens, closes, and re-opens.",
+      "right": "The hand exhibits complex, asynchronous finger motions. The index finger's base joint hyperextends from frame 38. The middle finger's middle joint first bends fully by frame 37 and then rapidly transitions into hyperextension by frame 52. The ring and pinky fingers also show hyperextension. The pinky finger's base joint performs three rapid bend-extend cycles. All finger spacings change dynamically. The wrist moves forward, then back, then forward again, while moving generally rightward and upward in the second half.",
+      "two_hands_relation": "The hands remain far apart throughout the entire 60-frame sequence with no contact or near-contact events. Their relative positioning changes: the right hand, which is always to the right of the left, moves from an initial position in front of and above the left hand to become vertically and horizontally aligned with it by frame 44."
+    }
+  ]
+}

annotations/ARCTIC_text/arctic_s04_laptop_use_01_viz_6.json

@@ -0,0 +1,33 @@
+{
+  "seq_name": "arctic_s04_laptop_use_01_viz",
+  "frame_start": 450,
+  "frame_end": 510,
+  "split": "train",
+  "annotations": [
+    {
+      "left": "The fingers, except for the static, partially bent thumb, frequently hyperextend. The spacing between fingers is dynamic.",
+      "right": "The thumb straightens slightly at the start, while the other fingers exhibit numerous hyperextension movements. The index finger remains constantly hyperextended.",
+      "two_hands_relation": "The left thumb makes prolonged contact with the right palm, and then the thumbs of both hands make contact twice at the end."
+    },
+    {
+      "left": "The thumb is held in a partially bent pose while the other four fingers repeatedly move into hyperextended positions.",
+      "right": "With the exception of the thumb which unbends slightly at the start, all fingers perform complex hyperextension motions. The index finger holds a static hyperextended pose.",
+      "two_hands_relation": "There is significant interaction: the left thumb first makes extended contact with the right palm, followed by two brief contacts between the tips of both thumbs."
+    },
+    {
+      "left": "The thumb remains partially bent. The other four fingers show various instances of hyperextension, with the ring and pinky fingers being most active. Finger spacing, especially between the middle and ring fingers, opens and closes repeatedly. The wrist moves left towards the end.",
+      "right": "Initially, the thumb moves from a bent to a partially bent state. The index finger's middle joint is held in a constant hyperextended state. The middle, ring, and pinky fingers frequently transition into and out of hyperextension. Finger spacing is very active.",
+      "two_hands_relation": "The left thumb makes contact with the right palm for two long intervals. Following this, the palms move apart and the two thumbs make direct tip-to-tip contact twice."
+    },
+    {
+      "left": "While the thumb stays partially bent, the index, middle, ring, and pinky fingers all move from extended or hyperextended states to straighter positions. The ring and pinky fingers in particular repeatedly enter and exit hyperextension at their base and middle joints. Spacing between fingers is highly dynamic.",
+      "right": "The index finger is held with its middle joint hyperextended throughout. The thumb straightens partially at the beginning. The middle, ring, and pinky fingers all perform complex movements involving hyperextension. The spaces between all fingers repeatedly open and close.",
+      "two_hands_relation": "A sequence of contacts defines the interaction: the left thumb tip first makes contact with the right palm, then releases, then makes contact again. Finally, the thumbs of both hands make contact with each other twice."
+    },
+    {
+      "left": "The thumb maintains a partially bent state throughout. The other fingers exhibit significant hyperextension: the index PIP joint moves from hyperextended to extended mid-sequence (frames 36-42), while the ring and pinky fingers repeatedly enter and exit hyperextended states at both their MCP and PIP joints. The spacing between the middle and ring fingers opens and closes five times. From frame 40, the wrist drifts to the left.",
+      "right": "At the start, the thumb's base joint moves from fully bent to partially bent by frame 24. The index finger's PIP joint remains in a state of hyperextension for the entire motion. The middle, ring, and pinky fingers perform numerous fast transitions between fully extended and hyperextended states at multiple joints. Spacing between all adjacent fingers changes dynamically throughout the sequence.",
+      "two_hands_relation": "A complex series of contacts occurs. First, the left thumb tip makes contact with the right palm from frame 18 to 31. It then briefly separates and makes contact again from frame 34 until frame 47. Immediately following this, the tip of the left thumb makes contact with the right thumb tip from frame 47 to 49, and again from frame 53 to 56. The right hand remains to the right of the left hand throughout."
+    }
+  ]
+}

annotations/ARCTIC_text/arctic_s04_microwave_grab_01_viz_4.json

@@ -0,0 +1,33 @@
+{
+  "seq_name": "arctic_s04_microwave_grab_01_viz",
+  "frame_start": 330,
+  "frame_end": 390,
+  "split": "train",
+  "annotations": [
+    {
+      "left": "The thumb remains bent while the other four fingers display significant hyperextension. The wrist moves in a circular path.",
+      "right": "The fingers, starting in various bent and hyperextended states, generally move towards a more extended posture. The wrist drifts right and down.",
+      "two_hands_relation": "The hands stay far apart, with the right hand moving from a position above and behind the left hand to one that is in front and vertically aligned."
+    },
+    {
+      "left": "While the thumb stays curled, the other fingers transition from an extended state into hyperextension. The wrist moves right and forward before reversing its trajectory.",
+      "right": "The thumb is held in a partially bent pose as the other fingers rapidly straighten from bent and hyperextended positions. The wrist moves steadily right, forward, and down.",
+      "two_hands_relation": "There is no interaction between the hands. The right hand shifts its position relative to the left, moving from up and back to front and level."
+    },
+    {
+      "left": "The thumb is held in a static, bent position. The index, ring, and pinky fingers move from an extended state into hyperextension at their base joints, with some middle joints also hyperextended. The wrist moves right, back, and up during the first half of the motion, then reverses direction.",
+      "right": "The fingers exhibit complex motion, moving from initial states of hyperextension and bending towards greater extension; the middle and ring fingers straighten particularly fast. The wrist performs a continuous, slow movement to the right, forward, and down.",
+      "two_hands_relation": "The hands remain far apart. Throughout the sequence, the right hand is to the right of the left, and it moves from a position above and behind the left hand to being in front of and vertically aligned with it."
+    },
+    {
+      "left": "The thumb is stationary and bent. All other fingers demonstrate significant hyperextension, especially at the base and middle joints, which develop during the first half of the sequence. The spacing between the ring and pinky fingers opens and closes twice. The wrist moves in an arc, shifting right and then left, back and then forward.",
+      "right": "With the thumb held partially bent, the other four fingers transition from hyperextended or bent states into straighter postures. The middle, ring, and pinky fingers all straighten at high speed. The wrist moves continuously rightward and downward.",
+      "two_hands_relation": "The hands maintain a large distance. The right hand moves quickly from behind the left hand to in front of it early on, while also moving from a higher position to a vertically aligned one over a longer period."
+    },
+    {
+      "left": "The thumb remains fully bent at the base and partially bent at its tip throughout. In the first half (frames 0-33), the base joints of the index, middle, ring, and pinky fingers all move from fully extended to a hyperextended state. The index and ring fingers maintain constant hyperextension at their middle joints, while the middle and pinky fingers show dynamic changes in hyperextension. The wrist moves right until frame 37, back until frame 22, and up until frame 17, after which these motions reverse.",
+      "right": "The thumb is held partially bent. The other fingers move towards extension from complex initial poses. The middle and ring fingers rapidly move from fully bent to hyperextended at their middle joints by frame 51 and 48, respectively. The pinky finger's joints also move quickly between bent and hyperextended states. The wrist moves at a medium speed right, forward, and down for the entire sequence.",
+      "two_hands_relation": "The two hands remain far apart and do not interact. The right hand is always to the right of the left. A fast position shift occurs as the right hand moves from behind the left to in front of it between frames 0 and 26. Concurrently, it moves from a position above the left hand to being vertically aligned between frames 0 and 45."
+    }
+  ]
+}

annotations/ARCTIC_text/arctic_s04_mixer_grab_01_viz_4.json

@@ -0,0 +1,33 @@
+{
+  "seq_name": "arctic_s04_mixer_grab_01_viz",
+  "frame_start": 270,
+  "frame_end": 330,
+  "split": "test",
+  "annotations": [
+    {
+      "left": "The fingers exhibit significant hyperextension, with the index and middle fingers straightening out from this state. The wrist moves forward and up.",
+      "right": "The thumb bends significantly at its base, moving from a hyperextended position. Other fingers also display movements into hyperextended postures. The wrist is highly mobile.",
+      "two_hands_relation": "The hands remain distant. The right hand's position shifts dynamically, moving from being in front of the left hand to behind it, and from above to below it."
+    },
+    {
+      "left": "Many fingers are held in or move out of a hyperextended state. The thumb straightens towards the end of the sequence. The wrist moves generally to the right, forward, and upward.",
+      "right": "The thumb performs a complex bending motion, while the other fingers transition into various hyperextended poses. The wrist moves rapidly in all directions.",
+      "two_hands_relation": "There is no contact between the hands. Their relative position changes, with the right hand moving up and then down with respect to the left."
+    },
+    {
+      "left": "The index and middle fingers move from a hyperextended state to fully extended. The ring finger's middle joint is constantly hyperextended. The thumb straightens late in the motion. Finger spacing changes dynamically, particularly between the index and middle fingers.",
+      "right": "The thumb's base joint transitions from hyperextended to fully bent in three distinct phases. The middle, ring, and pinky fingers all move into hyperextended postures. Spacing between the middle, ring, and pinky fingers closes and then re-opens.",
+      "two_hands_relation": "The hands stay far apart. The right hand, always to the right of the left, moves from a forward to a rear position and also moves up and then down relative to the left hand."
+    },
+    {
+      "left": "The hand shows widespread hyperextension. The base joints of the index and middle fingers straighten out from a hyperextended pose, while the middle finger's middle joint simultaneously becomes hyperextended. The thumb unbends towards the end. The wrist moves forward and up.",
+      "right": "The thumb's base joint moves from hyperextended, to bent, back to hyperextended, and finally to fully bent. The middle, ring, and pinky fingers also display hyperextension at various joints during the sequence. The wrist moves dynamically, shifting left and right, and up and down.",
+      "two_hands_relation": "While maintaining a large distance, the right hand's position relative to the left is highly variable. It moves from being in front of the left hand to behind it, and from vertically aligned to above, and then below the left hand."
+    },
+    {
+      "left": "The hand features extensive hyperextension. The index and middle finger base joints move from hyperextended to fully extended, while the middle finger's middle joint moves into hyperextension. The ring finger's middle joint remains constantly hyperextended. The thumb straightens out after frame 41. Finger spacing changes rapidly mid-sequence, with the index and middle fingers closing then opening. The wrist moves forward from frame 18 and up from frame 30, while shifting left and then right.",
+      "right": "The thumb's base joint performs a fast, complex motion: it moves from hyperextended to partially bent (frames 14-41), briefly back to hyperextended (41-47), and finally to fully bent (47-59). The middle, ring, and pinky fingers all enter hyperextended states at their base or middle joints during the second half of the motion. The wrist executes several rapid movements, shifting left then right (34-45), back then forward (36-53), and up then down (31-60).",
+      "two_hands_relation": "The hands remain far apart throughout the entire sequence. Their relative orientation changes significantly: the right hand moves from in front of the left to aligned with it (frames 16-29), then to the front again, and finally to the back (47-60). Vertically, it moves from an aligned position to above the left (32-48) and then shifts to below it (48-60)."
+    }
+  ]
+}

annotations/ARCTIC_text/arctic_s04_mixer_use_01_viz_2.json

@@ -0,0 +1,33 @@
+{
+  "seq_name": "arctic_s04_mixer_use_01_viz",
+  "frame_start": 330,
+  "frame_end": 390,
+  "split": "train",
+  "annotations": [
+    {
+      "left": "The index and pinky fingers are held with some joints hyperextended. The pinky finger straightens during the motion, while the wrist moves right and vertically.",
+      "right": "Several fingers exhibit hyperextension, particularly the index and middle fingers which transition between different hyperextended states. The fingers also spread apart and then close.",
+      "two_hands_relation": "The hands remain far apart, with the right hand moving from a position above and behind the left hand to one that is in front and below."
+    },
+    {
+      "left": "The hand maintains a distinct posture with the index finger's middle joint and the pinky's outer two joints hyperextended. The pinky uncurls from a bent position. The wrist drifts right, up, and then down.",
+      "right": "The fingers show complex motion, with the index and middle fingers moving from one hyperextended state to another. The spacing between the middle, ring, and pinky fingers opens and closes.",
+      "two_hands_relation": "There is no interaction between the hands. The right hand orbits the left at a distance, moving from a high back position to a low front position."
+    },
+    {
+      "left": "The middle and ring fingers are held fully extended. The index finger's middle joint and the pinky's two outer joints are constantly hyperextended. The thumb straightens early, and the pinky straightens from a bent state over the first half of the sequence.",
+      "right": "The index and middle fingers undergo a shift in posture, with their base joints hyperextending while their other joints straighten from a hyperextended state. The ring finger remains hyperextended. The fingers spread apart mid-sequence before closing again.",
+      "two_hands_relation": "The hands stay far apart. The right hand maintains its position to the right of the left hand while moving from behind to in front of it, and from above to below it."
+    },
+    {
+      "left": "The thumb straightens from a partially bent state at the beginning. The index and pinky fingers are held in a fixed hyperextended pose at some of their joints. The pinky finger also straightens at its base joint for most of the motion. The wrist moves right, then performs an up-and-down motion.",
+      "right": "The hand shows significant hyperextension in most fingers. The index and middle fingers transition their hyperextension from the outer joints to the base joints. The ring finger's outer joints are statically hyperextended. The space between the middle, ring, and pinky fingers widens and then narrows.",
+      "two_hands_relation": "The hands do not interact. The right hand moves from a position above and behind the left hand to a position below and in front of it, while always remaining to the left hand's right side."
+    },
+    {
+      "left": "The index finger's middle joint (PIP) and the pinky finger's middle and tip joints (PIP and DIP) remain hyperextended throughout. The thumb straightens from a partially bent state between frames 4 and 22. The pinky finger's base joint (MCP) moves from fully bent to fully extended from frame 8 to 41. The wrist travels right until frame 32, while also moving up until frame 22 and then down until frame 47.",
+      "right": "Multiple fingers display hyperextension. The index finger's base joint (MCP) hyperextends by frame 29, while its other two joints straighten from a hyperextended state. The middle finger's base joint hyperextends by frame 19 as its middle joint straightens. The ring finger's outer two joints are constantly hyperextended. Spacing between the middle and ring fingers opens by frame 18 and closes by frame 51.",
+      "two_hands_relation": "The hands remain far apart for the entire duration. Their relative position changes significantly: the right hand moves from being behind the left to in front of it by frame 37. Vertically, the right hand moves from above the left to aligned with it by frame 30, then moves back up by frame 45, and finally moves to a position below the left hand by the end of the sequence."
+    }
+  ]
+}

annotations/ARCTIC_text/arctic_s04_notebook_use_01_viz_7.json

@@ -0,0 +1,33 @@
+{
+  "seq_name": "arctic_s04_notebook_use_01_viz",
+  "frame_start": 630,
+  "frame_end": 690,
+  "split": "train",
+  "annotations": [
+    {
+      "left": "Several fingers show hyperextension, especially the index and middle fingers. The thumb actively bends and straightens. The wrist moves downwards and forwards.",
+      "right": "The ring finger is held in a constant hyperextended state. The pinky finger bends, and its spacing with the ring finger changes repeatedly. The wrist moves forward and to the right.",
+      "two_hands_relation": "The hands remain far apart, with the right hand moving from behind the left to in front of it at the start."
+    },
+    {
+      "left": "The hand displays prominent hyperextension in multiple finger joints while the thumb undergoes a full cycle of bending and extending. The wrist drifts down and forward.",
+      "right": "Most fingers are relatively straight, but the ring finger's middle joint is persistently hyperextended. The pinky is the most active finger, bending and unbending.",
+      "two_hands_relation": "The two hands do not interact. Their main relational change is the right hand shifting to a position in front of the left early in the motion."
+    },
+    {
+      "left": "The thumb bends fully and then extends. A notable feature is the hyperextension of the index finger's base and tip joints, and the middle finger's middle joint. Other fingers generally straighten out. Mid-sequence, the index and middle fingers, as well as the middle and ring fingers, move closer together.",
+      "right": "The ring finger's middle joint remains hyperextended throughout. The pinky finger bends progressively while its middle joint moves out of and back into a hyperextended state. The space between the ring and pinky fingers repeatedly opens and closes.",
+      "two_hands_relation": "The hands maintain a far distance. The right hand is always to the right of the left and at the same height, but it quickly moves from behind to in front of the left hand at the very beginning of the sequence."
+    },
+    {
+      "left": "The wrist moves steadily down and forward while shifting side-to-side. The thumb performs a fast bend-and-extend motion. The index finger hyperextends at its base and tip. The middle, ring, and pinky fingers all move from initial states of hyperextension or partial bending to become straighter.",
+      "right": "While the index finger stays straight, the middle, ring, and pinky fingers perform bending motions at their base joints. The ring finger is defined by a constant hyperextension at its middle joint. The pinky shows complex motion, bending while its middle joint moves between extended and hyperextended states.",
+      "two_hands_relation": "There is no interaction as the hands stay far apart. Their relative position changes only at the start, when the right hand moves from a posterior to an anterior position relative to the left."
+    },
+    {
+      "left": "The thumb rapidly bends between frames 6 and 23, then extends by frame 45. The index finger's base joint is hyperextended until frame 43, and its tip is hyperextended until frame 37. The middle finger's middle joint also shows periods of hyperextension, particularly between frames 23 and 49. The wrist moves right until frame 16, then left, while continuously moving down and forward throughout the sequence. The spacing between the index and middle fingers closes between frames 21 and 36.",
+      "right": "A critical static feature is the constant hyperextension of the ring finger's middle joint. The pinky finger bends in two stages, first partially by frame 19 and then fully by frame 36, while its middle joint moves from hyperextended to extended, back to hyperextended, and finally extended again. The spacing between the ring and pinky fingers oscillates between open and closed four times. The wrist moves to the right, forward, and performs an up-then-down motion.",
+      "two_hands_relation": "Throughout the motion, the hands remain far apart and do not interact. The right hand is always to the right of the left and vertically aligned. A fast relative position change occurs between frames 0 and 17, where the right hand moves from being behind the left hand to in front of it."
+    }
+  ]
+}

annotations/ARCTIC_text/arctic_s04_notebook_use_02_viz_8.json

@@ -0,0 +1,33 @@
+{
+  "seq_name": "arctic_s04_notebook_use_02_viz",
+  "frame_start": 750,
+  "frame_end": 810,
+  "split": "train",
+  "annotations": [
+    {
+      "left": "The index, ring, and pinky fingers straighten from hyperextended states. The thumb tip bends quickly after initially extending.",
+      "right": "The middle and ring fingers also straighten from hyperextension. The pinky's middle joint remains hyperextended throughout the motion.",
+      "two_hands_relation": "The hands stay far apart but their relative position shifts, with the right hand moving from behind and above the left to in front of and below it."
+    },
+    {
+      "left": "The hand shows complex finger motions, including notable hyperextension at the base of the index finger and in the middle joints of the ring and pinky fingers, all of which straighten out. The wrist moves in a broad arc.",
+      "right": "The pinky finger is held with its middle joint in a state of hyperextension. The middle and ring fingers also begin hyperextended before straightening. The wrist moves around its starting point.",
+      "two_hands_relation": "There is no interaction between the hands. The right hand moves from a position behind the left to in front of it, and from above to below it."
+    },
+    {
+      "left": "The index finger's base begins hyperextended and gradually straightens. The ring and pinky fingers both show hyperextension in their middle joints before extending. Mid-sequence, the thumb tip moves from extended to fully bent at high speed. The wrist moves right and up, then left and down.",
+      "right": "The pinky's middle joint is in a constant state of hyperextension, while its base bends at the start. The middle and ring fingers also straighten from an initial hyperextended posture. The thumb partially bends during the first half of the motion. Finger spacing changes dynamically, especially between the ring and pinky.",
+      "two_hands_relation": "The hands remain far apart. The right hand transitions from being behind and above the left hand to a position in front of and below it during the first half of the sequence."
+    },
+    {
+      "left": "The thumb tip extends and then rapidly bends. A key feature is the hyperextension in multiple fingers: the index finger's base straightens from this state, while the ring and pinky fingers' middle joints do so as well. The wrist moves right, back, and up, then reverses direction, moving left, forward, and down.",
+      "right": "The pinky finger's middle joint is held in a static hyperextended pose throughout. The middle and ring fingers begin with hyperextended middle joints which straighten early on. The thumb bends slowly. The wrist performs a complex motion, moving left then right, back then forward, and up then down.",
+      "two_hands_relation": "The hands maintain a constant far distance. Their relative configuration changes, with the right hand moving from a posterior and superior position relative to the left hand to an anterior and inferior one."
+    },
+    {
+      "left": "The index finger's base (MCP joint) is initially hyperextended and straightens over the course of the first 47 frames. The ring finger's middle joint (PIP) moves from a hyperextended to a fully extended state twice, from frames 11 to 23 and again from 28 to 45. Similarly, the pinky's middle joint becomes hyperextended at frame 18 and then straightens out by the end of the sequence. The thumb tip extends until frame 30, then quickly bends fully by frame 53. The wrist moves right until frame 34, then left, while moving back until frame 32, then forward. It also moves up from frame 12 to 33, then down.",
+      "right": "A critical, constant feature is the pinky finger's middle joint (PIP), which is held in hyperextension for the entire 60-frame motion; its base (MCP) joint also bends fully at the very beginning. The middle and ring fingers also begin with hyperextended middle joints, which straighten by frames 23 and 26, respectively. The thumb's tip bends from fully extended to partially bent between frames 8 and 33. The wrist moves left, then right, then left again, while moving back then forward, and up then down.",
+      "two_hands_relation": "Throughout the motion, the hands do not interact and their palms remain far apart. Their relative spatial positioning changes dynamically: from frames 2 to 32, the right hand moves from behind the left hand to in front of it. Concurrently, from frames 4 to 35, the right hand moves from a position above the left to one below it."
+    }
+  ]
+}

annotations/ARCTIC_text/arctic_s04_scissors_use_02_viz_0.json

@@ -0,0 +1,33 @@
+{
+  "seq_name": "arctic_s04_scissors_use_02_viz",
+  "frame_start": 90,
+  "frame_end": 150,
+  "split": "train",
+  "annotations": [
+    {
+      "left": "The middle, ring, and pinky fingers gradually move into a hyperextended state at their bases, while the index finger bends slightly near the end.",
+      "right": "Several fingers exhibit brief hyperextension at different joints. The thumb straightens and the hand generally opens up.",
+      "two_hands_relation": "The hands start moderately close and move far apart. The right thumb tip briefly approaches the left palm before moving away."
+    },
+    {
+      "left": "The hand's posture changes as the three smaller fingers hyperextend at their base joints. The wrist moves in a broad arc.",
+      "right": "The thumb straightens, and other fingers display temporary hyperextension. The wrist moves up and to the right.",
+      "two_hands_relation": "The hands separate, with the right hand moving up and back relative to the left. The right thumb tip gets close to the left palm, then quickly retracts."
+    },
+    {
+      "left": "The middle, ring, and pinky fingers transition from fully extended to hyperextended at their base joints throughout the motion. Late in the sequence, the index finger begins to bend. The space between the index and middle fingers closes and then re-opens.",
+      "right": "The thumb fully extends. The index, middle, and ring fingers all exhibit brief moments of hyperextension at their middle or tip joints early on. The pinky straightens from an initially bent and hyperextended state.",
+      "two_hands_relation": "The palms move from a medium distance to far apart. The right thumb tip slowly approaches the left palm during the first half of the motion, then rapidly moves away. The right hand moves to a position above and behind the left."
+    },
+    {
+      "left": "Over the sequence, the middle, ring, and pinky fingers progressively hyperextend at the base. The thumb and most of the index finger remain extended, though the index starts to bend after the halfway point. The wrist moves left, back, and down before reversing direction horizontally and in depth.",
+      "right": "The thumb straightens completely. Early in the motion, the tips of the index, middle, and ring fingers temporarily hyperextend. The pinky also straightens. The wrist performs a general motion up, back, and to the right.",
+      "two_hands_relation": "The hands separate quickly. A key interaction is the right thumb tip's slow approach toward and fast retreat from the left palm. Spatially, the right hand, always to the right of the left, shifts to a position above and behind it."
+    },
+    {
+      "left": "The thumb remains fully extended. The middle, ring, and pinky MCP joints transition from fully extended to a hyperextended state over the 60 frames. The index finger stays straight until frame 36, then its middle joint bends partially. The spacing between the index and middle fingers closes between frames 28-40, then quickly re-opens. The wrist moves left until frame 38 and backward until frame 31, before moving right and forward.",
+      "right": "The thumb moves from partially bent to fully extended. At the start of the sequence, the index fingertip hyperextends until frame 12. The middle and ring fingers also show brief hyperextension at their middle joints, both returning to a straight state by mid-sequence. The pinky straightens from a bent and hyperextended posture. The space between the index and middle fingers closes by frame 11.",
+      "two_hands_relation": "The distance between the palms increases from medium to far, a change that occurs quickly between frames 10 and 45. The right hand is always to the right of the left and moves from an aligned position to be behind and above it. From the start until frame 24, the right thumb tip moves from far to near the left palm, then rapidly moves away between frames 24 and 48."
+    }
+  ]
+}

annotations/ARCTIC_text/arctic_s04_waffleiron_use_01_viz_0.json

@@ -0,0 +1,33 @@
+{
+  "seq_name": "arctic_s04_waffleiron_use_01_viz",
+  "frame_start": 90,
+  "frame_end": 150,
+  "split": "train",
+  "annotations": [
+    {
+      "left": "The fingers exhibit complex movements, with multiple joints entering a state of hyperextension. The thumb bends and straightens, while the wrist moves dynamically.",
+      "right": "The fingers spread apart as several joints hyperextend. The wrist moves generally left and up.",
+      "two_hands_relation": "The hands approach each other at the beginning of the sequence, with the right hand moving from a position behind and below the left hand to one in front of and above it."
+    },
+    {
+      "left": "Numerous fingers, including the index and pinky, hyperextend at various joints. Mid-sequence, the thumb bends fully before extending again. The wrist moves in a complex path, shifting right then left.",
+      "right": "The index, middle, and ring fingers all display hyperextension. The fingers, initially closed, spread open mid-sequence. The wrist travels upwards and to the left.",
+      "two_hands_relation": "Initially, the hands move closer to one another, with the left thumb tip approaching the right palm. The right hand shifts its position significantly relative to the left, moving forwards and upwards."
+    },
+    {
+      "left": "The thumb bends fully and then straightens out mid-sequence. The index, ring, and pinky fingers all show significant hyperextension at their base or middle joints. The wrist moves right and forward at the start, then reverses direction to move left and back.",
+      "right": "The index finger's base joint progressively hyperextends throughout the motion. The middle finger displays a complex posture, with its base joint hyperextending while its middle joint bends fully. Mid-sequence, the fingers spread apart.",
+      "two_hands_relation": "The hands, starting far apart, quickly approach each other. The right hand is always to the right of the left, but it moves from a position behind the left hand to in front of it, and from below to above it."
+    },
+    {
+      "left": "Multiple fingers display hyperextension: the index finger's base and middle joints, the ring finger's middle joint, and the pinky's base and middle joints all enter this state. The thumb performs a distinct bend-and-extend motion. The wrist moves in all three dimensions, initially traveling right, forward, and down.",
+      "right": "Hyperextension is a key feature, seen in the index, middle, and ring fingers. The middle finger's base joint hyperextends while its middle joint becomes fully bent. All finger spacings open up mid-sequence before closing again. The wrist moves left, up, and backward.",
+      "two_hands_relation": "At the start, the palms move from a far to a medium distance. The right hand, which remains to the right of the left, executes a clear positional shift, moving from behind and below the left hand to in front of and above it during the first half of the sequence."
+    },
+    {
+      "left": "The thumb bends fully between frames 18 and 38, then extends again by frame 49. The other fingers show complex hyperextension: the index finger's base joint hyperextends from frame 36 to 56, while its middle joint moves from hyperextended to bent. The ring and pinky fingers also show hyperextension in their middle and base joints. The wrist moves right until frame 20, then moves left. It also moves back until frame 39, then moves forward.",
+      "right": "The index finger's base joint gradually moves into hyperextension over the entire sequence. The middle finger forms a complex pose as its base joint hyperextends (frames 24-60) while its middle joint moves from hyperextended to fully bent (frames 18-46). The ring finger's middle joint hyperextends until frame 40. From frame 23 to 46, all fingers spread apart from a closed position.",
+      "two_hands_relation": "In the first third of the motion, the palms rapidly move closer (frames 0-21), and the left thumb tip approaches the right palm (frames 0-20). The right hand's position relative to the left changes dynamically: it moves from behind to in front of the left hand between frames 7 and 30, then moves back again. Vertically, it moves from below to above the left hand between frames 0 and 32, before leveling out."
+    }
+  ]
+}

annotations/ARCTIC_text/arctic_s05_box_grab_01_viz_7.json

@@ -0,0 +1,33 @@
+{
+  "seq_name": "arctic_s05_box_grab_01_viz",
+  "frame_start": 450,
+  "frame_end": 510,
+  "split": "train",
+  "annotations": [
+    {
+      "left": "The fingers exhibit complex motion, with multiple joints showing hyperextension. The wrist is highly active, moving in all directions.",
+      "right": "The fingers, many starting in a hyperextended posture, gradually straighten out. The wrist also moves dynamically.",
+      "two_hands_relation": "The hands remain far apart but their relative front-back and up-down positioning changes during the sequence."
+    },
+    {
+      "left": "The hand displays intricate finger movements characterized by widespread hyperextension. The wrist executes a continuous, fast sweeping motion.",
+      "right": "The four main fingers transition from bent and hyperextended states to a more extended posture. The wrist moves primarily right, back, and down.",
+      "two_hands_relation": "There is no interaction between the hands. The right hand moves from a position in front of the left to behind it, and also shifts downwards relative to the left."
+    },
+    {
+      "left": "The thumb is held partially bent, while the other four fingers undergo complex movements involving hyperextension. For example, the index finger's middle joint is constantly hyperextended. Towards the end, the middle, ring, and pinky fingers bend. The wrist moves rapidly upwards while sweeping left and forward, then right and backward.",
+      "right": "The thumb remains partially bent as the four fingers straighten from various bent and hyperextended states. The base joints of all four fingers move from hyperextended to a more neutral, extended position. Mid-sequence, the space between the index and middle fingers opens.",
+      "two_hands_relation": "The hands maintain a far distance. The right hand, always to the right of the left, shifts from being in front of the left hand to behind it, and from being vertically aligned to a position below it."
+    },
+    {
+      "left": "All fingers show complex motion with significant hyperextension. The base joints of the index, middle, ring, and pinky fingers all start hyperextended before moving to bent or extended states. The wrist executes a fast, continuous arc, moving up, left, and forward, then reversing horizontally to move right and back while continuing its upward trajectory.",
+      "right": "The four main fingers, all starting with hyperextended base joints, transition towards a fully extended posture. The middle, ring, and pinky fingers also straighten from a bent state at their middle joints. The wrist performs a broad sweeping motion, moving right, back, and down.",
+      "two_hands_relation": "The hands remain far apart and do not interact. Their relative position changes as the right hand moves from being in front of the left to behind it, and from being at the same height to a position below it."
+    },
+    {
+      "left": "The thumb is held in a constant partially bent state. The index finger's middle (PIP) joint is hyperextended throughout, while its base (MCP) joint moves from hyperextended to partially bent. The middle, ring, and pinky fingers also display significant hyperextension at multiple joints before their base joints move to a bent state towards the end of the motion. The wrist moves at a fast speed, sweeping upwards throughout while moving from right to left until frame 32, and then left to right until the end. It also moves forward until frame 39 and then backward.",
+      "right": "The thumb remains partially bent. The four other fingers transition from complex postures to a more uniform extended state. Specifically, the base (MCP) joints of all four fingers move from a hyperextended state to fully extended. The middle (PIP) joints of the ring and pinky fingers move from bent to fully extended. The index finger's middle joint remains constantly hyperextended. The spacing between the index and middle fingers opens between frames 20 and 45. The wrist moves right, backward, and downward for most of the sequence.",
+      "two_hands_relation": "Throughout the motion, the hands remain far apart. Their relative position shifts significantly: while the right hand is always to the right of the left, it moves from being in front of the left hand to behind it between frames 15 and 38. It also moves from being vertically aligned with the left hand to a position below it from frame 34 onwards."
+    }
+  ]
+}

annotations/ARCTIC_text/arctic_s05_box_use_01_viz_7.json

@@ -0,0 +1,33 @@
+{
+  "seq_name": "arctic_s05_box_use_01_viz",
+  "frame_start": 630,
+  "frame_end": 690,
+  "split": "train",
+  "annotations": [
+    {
+      "left": "Several fingers are held in a hyperextended state while the wrist moves left and backward.",
+      "right": "Most fingers move into a hyperextended posture, and the thumb bends towards the end. The wrist moves right and backward.",
+      "two_hands_relation": "The hands move away from each other while remaining far apart."
+    },
+    {
+      "left": "The fingers maintain or adopt hyperextended positions. The wrist moves steadily away from the body's midline.",
+      "right": "The fingers become hyperextended while the thumb performs a distinct bending motion late in the sequence. The wrist also moves away from the midline.",
+      "two_hands_relation": "The hands maintain a large, constant separation and move apart horizontally, with the right hand moving backward to align with the left."
+    },
+    {
+      "left": "The thumb is bent and the index finger is held in a static, hyperextended pose. The middle, ring, and pinky fingers transition into hyperextension mid-sequence. The wrist moves rapidly left and back.",
+      "right": "The index finger remains hyperextended while the other fingers also move into hyperextension. Towards the end, the thumb bends quickly. The wrist moves fast to the right and back.",
+      "two_hands_relation": "The hands continuously move away from each other on the left-right axis. The right hand, initially in front of the left, moves backward mid-sequence to become aligned with it."
+    },
+    {
+      "left": "The index finger is held steady in a hyperextended state. The remaining fingers increase their hyperextension during the second half of the motion, and the space between the index and middle fingers closes. The wrist moves left, back, and executes a down-then-up motion.",
+      "right": "Most fingers shift from an extended to a hyperextended state at their base joints. A key event is the thumb bending sharply towards the end of the sequence. The wrist moves consistently rightward and backward, with a down-then-up vertical movement.",
+      "two_hands_relation": "The hands remain far apart and move away from each other. Mid-sequence, the right hand shifts from a forward position relative to the left hand to an aligned one on the front-back axis, while remaining at the same height."
+    },
+    {
+      "left": "The thumb remains partially bent. The index finger is static, with its middle joint (PIP) held in hyperextension. After frame 33, the middle and ring fingers' base joints also hyperextend. The pinky's base joint hyperextends between frames 18 and 53. The space between the index and middle fingers closes from frame 37. Starting around frame 17, the wrist moves fast to the left and back, while also moving down until frame 46 and then quickly up.",
+      "right": "The index finger is held static with its middle and tip joints (PIP/DIP) hyperextended. The middle, ring, and pinky fingers' base joints transition to a hyperextended state over the course of the motion. A significant action occurs late, as the thumb's base joint bends fully at a fast speed between frames 40 and 55. The wrist moves fast to the right and back throughout, while also moving down and then up between frames 31 and 60.",
+      "two_hands_relation": "The hands maintain a far distance from each other throughout the sequence. The right hand is always to the right of the left hand and at the same vertical level. They move apart horizontally as the left wrist moves left and the right wrist moves right. The primary relational change occurs between frames 32 and 48, where the right hand moves backward at a fast speed to shift from being in front of the left hand to being aligned with it on the front-back axis."
+    }
+  ]
+}

annotations/ARCTIC_text/arctic_s05_box_use_02_viz_8.json

@@ -0,0 +1,33 @@
+{
+  "seq_name": "arctic_s05_box_use_02_viz",
+  "frame_start": 510,
+  "frame_end": 570,
+  "split": "train",
+  "annotations": [
+    {
+      "left": "The fingers are held in a hyperextended position while the wrist moves up and forward, then reverses direction. The spacing between the middle and ring fingers changes dynamically.",
+      "right": "The fingers display widespread hyperextension. The wrist moves up and forward initially, then moves down, back, and to the left.",
+      "two_hands_relation": "The hands remain far apart, with the right hand moving from a position behind the left to in front of it."
+    },
+    {
+      "left": "Most fingers are held in a strained, hyperextended pose. The thumb remains partially bent. The wrist performs a clear two-part motion: up and forward, followed by a faster down and back movement.",
+      "right": "The fingers are prominently hyperextended. The thumb is held partially bent. The wrist moves left while transitioning from an upward and forward trajectory to a downward and backward one.",
+      "two_hands_relation": "The hands maintain a large distance. Mid-sequence, the right hand crosses from behind the left hand to in front of it and also moves to a position above it."
+    },
+    {
+      "left": "The thumb is held partially bent, while the other four fingers exhibit significant hyperextension across multiple joints. The ring finger's middle joint transitions from hyperextended to partially bent. The spacing between the middle and ring fingers opens twice before closing rapidly at the end. The wrist moves forward and up, then moves back, down, and to the right.",
+      "right": "With the thumb held partially bent, the other fingers maintain or move into hyperextended states. The middle finger's base joint briefly hyperextends before returning to a straight position. The spacing between the index and middle fingers opens and then closes. The wrist moves up and forward, then shifts down, back, and to the left.",
+      "two_hands_relation": "The hands do not interact and stay far apart. The right hand, always to the right of the left, moves from a posterior to an anterior position relative to the left hand, while also moving from vertically aligned to a higher position."
+    },
+    {
+      "left": "The index, middle, ring, and pinky fingers are all characterized by hyperextension. Notably, the ring finger's middle joint bends from a hyperextended state. The thumb is consistently bent. Mid-sequence, the fingers spread apart, particularly between the middle and ring fingers. The wrist initially drifts up and forward before accelerating down, back, and to the right.",
+      "right": "The hand displays extensive hyperextension in all fingers except the thumb, which stays bent. The middle finger's base joint hyperextends and then straightens. The index and middle fingers spread apart and then come back together. The wrist moves left, shifting from an initial up-and-forward motion to a sustained down-and-back motion.",
+      "two_hands_relation": "The hands maintain a far distance without any contact. Their relative positioning changes: starting from frame 19, the right hand moves from being behind the left to in front of it, and starting from frame 35, it moves from being level with the left to above it."
+    },
+    {
+      "left": "The thumb remains partially bent. The other four fingers show complex hyperextended postures: the index and middle fingers are consistently hyperextended at their middle and/or tip joints while their base joints also move into hyperextension. The ring finger's middle joint uniquely moves from hyperextended to partially bent. Spacing between the middle and ring fingers opens between frames 10-21 and 25-47, then closes fast. The wrist moves up and forward until frame 17, then quickly moves down and back for the rest of the sequence, while also moving right from frame 25 onward.",
+      "right": "The thumb is held partially bent. The other fingers are defined by hyperextension: the ring and pinky fingers are mostly held in or move into hyperextended states. The middle finger's base joint hyperextends from frames 0-41 and then straightens. The index finger's tip joint becomes hyperextended after frame 40. The space between the index and middle fingers opens from frames 4-29 and closes from frames 47-58. The wrist moves up and forward until frame 16, then moves down and back, while consistently moving left from frame 10.",
+      "two_hands_relation": "Throughout the sequence, the hands remain far apart. The right hand is always to the right of the left. A key spatial shift occurs as the right hand moves from behind the left hand to in front of it between frames 19 and 60. Additionally, the right hand moves from being vertically aligned with the left to a position above it between frames 35 and 60."
+    }
+  ]
+}

annotations/ARCTIC_text/arctic_s05_capsulemachine_grab_01_viz_9.json

@@ -0,0 +1,33 @@
+{
+  "seq_name": "arctic_s05_capsulemachine_grab_01_viz",
+  "frame_start": 570,
+  "frame_end": 630,
+  "split": "train",
+  "annotations": [
+    {
+      "left": "The thumb bends from a hyperextended state while the other fingers, many of which are hyperextended, straighten. The wrist moves down.",
+      "right": "The thumb straightens while the other fingers move out of hyperextended poses. The wrist moves up and side-to-side.",
+      "two_hands_relation": "The hands stay far apart, with the right hand moving from a position below and behind the left to above and in front of it."
+    },
+    {
+      "left": "The hand shows widespread finger hyperextension. The thumb transitions from hyperextended to partially bent. Other fingers straighten, and some finger pairs close their spacing.",
+      "right": "Many fingers move from hyperextended to straight postures. The thumb straightens mid-sequence. The wrist moves up while also shifting horizontally.",
+      "two_hands_relation": "The hands remain distant and do not interact, but their relative position changes as the right hand moves upwards and forwards relative to the left."
+    },
+    {
+      "left": "The thumb begins hyperextended and gradually bends. The index finger's middle joint hyperextends mid-sequence. The middle, ring, and pinky fingers also display significant hyperextension while generally straightening. The index and middle fingers, as well as the ring and pinky, close their spacing early on.",
+      "right": "The thumb straightens from a bent pose. The index, middle, and ring fingers transition from various states of hyperextension to more extended postures. The space between the middle and ring fingers closes. The wrist moves down then up, and right then left.",
+      "two_hands_relation": "The hands maintain a far distance. Throughout the motion, the right hand moves at a fast speed from below the left hand to above it, while also moving from behind to in front of it."
+    },
+    {
+      "left": "Numerous fingers exhibit hyperextension. The thumb bends from a hyperextended starting position. The index finger's middle joint hyperextends, while the middle, ring, and pinky fingers are all hyperextended at one or more joints throughout the motion. The wrist moves down, forward, and then backward.",
+      "right": "The thumb straightens from a bent posture. The other four fingers show complex movements involving straightening from hyperextended states. The pinky maintains a partially bent base joint while its other joints move. The wrist moves up, shifting from right to left.",
+      "two_hands_relation": "There is no direct interaction as the hands remain far apart. The right hand is always to the right of the left, and it moves from a position below and behind the left hand to one above and in front of it."
+    },
+    {
+      "left": "The thumb's base joint moves from hyperextended to partially bent over the course of the sequence. The index finger's middle joint moves from fully extended to hyperextended by frame 39, returning to extended towards the end. The middle, ring, and pinky fingers all display constant hyperextension in at least one joint. The wrist moves down continuously, forward until frame 32, then backward at a fast speed, and begins moving left after frame 23.",
+      "right": "The thumb straightens from a partially bent state between frames 28 and 54. The index and middle fingers both have base joints that move from hyperextended to extended, and middle joints that move from extended to hyperextended. The ring and pinky fingers also show transitions involving hyperextension. The wrist moves down then up, right then left at a fast speed, and executes a forward-back-forward motion.",
+      "two_hands_relation": "The hands remain far from each other throughout the 60-frame sequence. Their relative position changes significantly: the right hand is always to the right of the left, but it moves at a fast speed from a position below the left hand to above it, and simultaneously moves from behind the left hand to in front of it between frames 21 and 58."
+    }
+  ]
+}

annotations/ARCTIC_text/arctic_s05_capsulemachine_use_01_viz_5.json

@@ -0,0 +1,33 @@
+{
+  "seq_name": "arctic_s05_capsulemachine_use_01_viz",
+  "frame_start": 390,
+  "frame_end": 450,
+  "split": "train",
+  "annotations": [
+    {
+      "left": "The fingers transition from a bent posture to a straightened, hyperextended state. The wrist moves right, back, and down.",
+      "right": "The fingers, many starting in a hyperextended pose, continue to straighten and hyperextend. The wrist moves generally up and forward.",
+      "two_hands_relation": "The hands start far apart and move closer together, with the right hand moving from below to a vertically aligned position with the left."
+    },
+    {
+      "left": "The hand opens up throughout the sequence, with the middle, ring, and pinky fingers exhibiting significant hyperextension. The thumb bends over time.",
+      "right": "The hand maintains an open posture, with all four fingers displaying various degrees of hyperextension at different joints. The thumb bends.",
+      "two_hands_relation": "The palms approach each other at a fast speed. The right hand shifts from a position below the left to one that is vertically aligned."
+    },
+    {
+      "left": "The thumb gradually bends while the other fingers straighten. Notably, the middle, ring, and pinky fingers all show hyperextension in multiple joints. The middle and ring fingers move closer together mid-sequence. The wrist drifts right, backward, and then forward.",
+      "right": "The thumb bends as the motion progresses. The index, middle, ring, and pinky fingers, starting extended, move into various hyperextended states. The index and middle fingers close together towards the end. The wrist moves up and forward.",
+      "two_hands_relation": "The distance between the palms decreases significantly. The right hand moves from a position below the left to being vertically aligned with it, while also shifting from an aligned frontal position to being in front, then behind the left hand."
+    },
+    {
+      "left": "The fingers uncurl over the duration of the movement, with the index finger's middle joint and several joints on the other three fingers ending in a state of hyperextension. The thumb bends completely. The wrist performs a slow drift down, right, and back, before moving forward again.",
+      "right": "The hand's posture is characterized by widespread hyperextension across all four fingers, with joints transitioning into and out of this state. The thumb moves from extended to bent. The wrist moves upwards while shifting horizontally and in depth.",
+      "two_hands_relation": "The hands, initially distant, move to a medium proximity. The right hand, always to the right of the left, elevates to its height and moves from an aligned position to the front and then to the back."
+    },
+    {
+      "left": "The thumb's base joint moves from fully extended to fully bent by frame 56. The index finger straightens, with its middle (PIP) joint becoming hyperextended by frame 45. The middle finger straightens from a bent state, but its middle and end (PIP and DIP) joints are constantly hyperextended. The ring and pinky fingers also straighten into hyperextended postures. Spacing between the middle and ring fingers closes between frames 13 and 41. The wrist moves right until frame 42, back until frame 36, and down until frame 46.",
+      "right": "The thumb bends during the sequence. The index finger's base joint moves from hyperextended to fully extended, while its middle joint remains hyperextended. The middle, ring, and pinky fingers all exhibit complex motions involving multiple joints moving into hyperextended states. For instance, the middle finger's base (MCP) joint moves from hyperextended to extended, then quickly back to hyperextended by frame 50. The wrist moves up throughout, shifting right then left, and forward then back.",
+      "two_hands_relation": "The palms of the hands move from a far to a medium distance between frames 6 and 47. The right hand maintains its position to the right of the left hand. It moves from being below the left hand to vertically aligned by frame 46 and shifts from an aligned depth to being in front of and then behind the left hand over the course of the motion."
+    }
+  ]
+}

annotations/ARCTIC_text/arctic_s05_espressomachine_grab_01_viz_8.json

@@ -0,0 +1,33 @@
+{
+  "seq_name": "arctic_s05_espressomachine_grab_01_viz",
+  "frame_start": 570,
+  "frame_end": 630,
+  "split": "train",
+  "annotations": [
+    {
+      "left": "The index and middle fingers are held in a static, hyperextended pose. The pinky finger bends and then straightens while the wrist moves upward and forward.",
+      "right": "The hand displays widespread hyperextension across its fingers, which move from an open to a closed spacing. The wrist moves downward.",
+      "two_hands_relation": "The hands remain far apart, with the right hand moving from a position above the left to one below it."
+    },
+    {
+      "left": "The hand maintains hyperextended index and middle fingers throughout. The main movement involves the pinky finger bending and extending, and the wrist traveling in an upward arc.",
+      "right": "Many fingers are held in or move into a hyperextended state. Initially open fingers close together during the first half of the sequence. The wrist moves down and side-to-side.",
+      "two_hands_relation": "The hands do not interact. The right hand, positioned behind and to the right of the left, drops from a higher to a lower elevation."
+    },
+    {
+      "left": "The index and middle fingers remain hyperextended at their middle joints. The pinky finger first bends then extends, while the ring finger straightens from an initial hyperextended state. The wrist moves forward and up, then down.",
+      "right": "The index finger is constantly hyperextended. The middle, ring, and pinky fingers all exhibit complex transitions, moving from bent or hyperextended states towards extension. The spacing between the fingers closes by mid-sequence.",
+      "two_hands_relation": "The hands maintain a far distance. A key spatial change occurs as the right hand moves quickly from above the left hand to below it, while consistently staying to the right and back."
+    },
+    {
+      "left": "The wrist moves forward continuously, rising until mid-sequence before lowering. The index and middle fingers are held with their middle joints hyperextended. The pinky finger completes a bend-and-straighten cycle, while the ring finger transitions from hyperextended to fully straight.",
+      "right": "The index finger's base and middle joints are constantly hyperextended. Other fingers also show hyperextension before generally straightening out. The thumb straightens mid-sequence. The initially open spacing between fingers closes. The wrist moves down while shifting laterally.",
+      "two_hands_relation": "There is no direct interaction as the hands stay far apart. Their relative horizontal positions are stable, but the right hand executes a fast vertical drop from above to below the left hand."
+    },
+    {
+      "left": "Throughout the sequence, the index and middle fingers maintain hyperextension at the middle (PIP) joint while other joints are extended. The thumb is held with its base joint bent and tip joint extended. The pinky finger's base joint bends until frame 20 then extends, while its middle joint becomes hyperextended by frame 22. The wrist moves forward throughout the motion, shifting left until frame 21, then right. It rises fast until frame 35, then moves down.",
+      "right": "The hand features significant hyperextension. The index finger's base and middle joints are constantly hyperextended. The ring finger's tip moves from fully bent to hyperextended by frame 29 and then straightens. The pinky transitions from bent to hyperextended and finally to extended. Mid-sequence, between frames 33 and 45, the thumb extends quickly. The open spacing between the index-middle and ring-pinky pairs closes by frame 30.",
+      "two_hands_relation": "The hands remain far apart for the entire 60-frame sequence. Their relative position is constant horizontally, with the right hand always to the right of and behind the left. A significant, fast vertical shift occurs as the right hand moves from a position above the left to below it, a transition that completes by frame 42."
+    }
+  ]
+}

annotations/ARCTIC_text/arctic_s05_ketchup_grab_01_viz_0.json

@@ -0,0 +1,33 @@
+{
+  "seq_name": "arctic_s05_ketchup_grab_01_viz",
+  "frame_start": 30,
+  "frame_end": 90,
+  "split": "test",
+  "annotations": [
+    {
+      "left": "All fingers slowly hyperextend and spread apart, then quickly return to a neutral pose. The wrist moves in an arc.",
+      "right": "The fingers straighten from various bent and hyperextended states. The pinky finger actively bends and straightens. The wrist moves in a wide path.",
+      "two_hands_relation": "The hands remain far apart, with the right hand shifting its position relative to the left."
+    },
+    {
+      "left": "The hand opens as all four fingers move into a hyperextended state and spread out, before relaxing and closing again towards the end. The wrist moves up and right, then down and left.",
+      "right": "The thumb extends while several fingers straighten from hyperextended positions. The pinky finger is notably active, performing bending and unbending motions. The wrist moves dynamically.",
+      "two_hands_relation": "There is no interaction between the hands. The right hand moves from a forward and level position to an aligned and lower position relative to the left."
+    },
+    {
+      "left": "The thumb extends and then bends back. All four fingers transition from various states into hyperextension for most of the sequence, before quickly relaxing at the end. The fingers also spread apart mid-sequence and then come together. The wrist moves right, forward, and up, then reverses direction.",
+      "right": "The thumb extends twice. The index finger straightens from a hyperextended state. The ring finger maintains a hyperextended posture while bending at its base. The pinky finger performs a complex bend-and-extend motion. The spacing between fingers opens and closes.",
+      "two_hands_relation": "The hands maintain a far distance. The right hand, always to the right of the left, moves from being in front of the left to being aligned with it, and from being vertically aligned to a lower position."
+    },
+    {
+      "left": "For most of the motion, the index, middle, ring, and pinky fingers slowly move into and hold a hyperextended pose. Near the end, they quickly return to a partially bent state. The fingers spread apart in the middle of the sequence before closing again. The wrist executes a smooth, continuous movement up and to the right, and then down and to the left.",
+      "right": "The thumb straightens, while the index and middle fingers move from hyperextended to straight positions. The ring finger holds a distinct pose, bent at the base but hyperextended at the middle joint. The pinky finger bends and unbends twice. Spacing between fingers changes, with some closing and others opening.",
+      "two_hands_relation": "The hands stay far from each other and do not interact. Throughout the motion, the right hand shifts from a forward position to an aligned one and from a level position to a lower one, always remaining to the left hand's right."
+    },
+    {
+      "left": "The thumb extends between frames 13 and 20, then gradually bends. The four fingers progressively move into a state of hyperextension across multiple joints, a state maintained until around frame 53, after which they quickly return to a bent or extended pose. The finger spacing changes dynamically: the fingers spread apart starting around frame 7 and close again towards the end. The wrist moves right, forward, and up until frame 42, then reverses, moving left, back, and down towards the end.",
+      "right": "The thumb's base joint extends from a bent state from frame 0 to 38, and again from frame 47 to 60. The index finger's middle and distal joints straighten from a hyperextended state over the entire sequence. The ring finger's base joint bends from a hyperextended state, while its middle joint remains constantly hyperextended. The pinky finger is highly active, moving from hyperextended to bent, then bending fully between frames 25 and 42 before straightening again. The wrist moves left, back, and up initially, then moves right and down towards the end.",
+      "two_hands_relation": "Throughout the 60-frame sequence, the hands remain far apart and do not make any contact. Their relative spatial orientation changes: the right hand is always to the right of the left. It moves from being in front of the left hand to being aligned with it by frame 51. It also moves from being vertically aligned to a position below the left hand by frame 23."
+    }
+  ]
+}

annotations/ARCTIC_text/arctic_s05_ketchup_use_01_viz_5.json

@@ -0,0 +1,33 @@
+{
+  "seq_name": "arctic_s05_ketchup_use_01_viz",
+  "frame_start": 330,
+  "frame_end": 390,
+  "split": "train",
+  "annotations": [
+    {
+      "left": "The fingers exhibit complex movements, frequently entering states of hyperextension. The wrist drifts steadily.",
+      "right": "The fingers also display significant hyperextension. The thumb remains stationary and extended.",
+      "two_hands_relation": "The hands remain far apart, with the right hand moving up and then down relative to the left."
+    },
+    {
+      "left": "The hand's primary characteristic is widespread hyperextension across the four fingers, while the thumb bends and extends independently.",
+      "right": "The fingers transition between extended and hyperextended postures, with the thumb held straight throughout.",
+      "two_hands_relation": "No interaction occurs between the hands. They maintain distance while their vertical alignment changes during the sequence."
+    },
+    {
+      "left": "The index, middle, ring, and pinky fingers all show recurring hyperextension at various joints. The thumb performs an independent bending motion. The wrist moves steadily to the right, forward, and executes a down-then-up movement. Finger spacing changes dynamically.",
+      "right": "The four main fingers also prominently feature hyperextension, with the pinky's middle joint held in a constant hyperextended state. The thumb is held fully extended. The wrist drifts slowly to the right, forward, and upward. Spaces between fingers open and close.",
+      "two_hands_relation": "The hands remain far apart. The right hand, always to the right of and behind the left, starts below the left, moves above it mid-sequence, and then returns to a position below it."
+    },
+    {
+      "left": "A key feature is the hyperextension occurring in the index, middle, ring, and pinky fingers. The thumb separately extends and then bends. The wrist's trajectory is a continuous medium-speed motion forward, to the right, down, and then up. The fingers repeatedly spread and close.",
+      "right": "The hand's motion is defined by the fingers moving into hyperextended states, with the pinky's middle joint held in hyperextension throughout. The thumb is static and extended. The wrist drifts slowly up, forward, and to the right.",
+      "two_hands_relation": "The hands do not interact and maintain a far distance. Their relative vertical position is dynamic: the right hand moves from a lower position to a higher one, then back down, while remaining behind and to the right of the left hand."
+    },
+    {
+      "left": "The hand displays complex articulation with widespread hyperextension. The index finger's middle and end joints become hyperextended, while its base joint straightens. The middle, ring, and pinky fingers also show hyperextension at multiple joints throughout the sequence. The thumb initially extends quickly, then bends, and finally moves into a fully bent state after frame 25. The wrist moves at a medium speed right and forward for the entire duration, while moving down until frame 32 and then upward. Finger spacing is highly active, with multiple instances of fingers closing and opening.",
+      "right": "The thumb remains fully extended. All other fingers demonstrate significant hyperextension. The index finger's base and middle joints transition into hyperextended states. The pinky finger's middle joint is in constant hyperextension. The ring finger shows complex motion, transitioning between hyperextension and a fully bent state. The wrist moves slowly right, forward, and upward throughout the sequence. The spaces between the index, middle, and ring fingers close and open periodically.",
+      "two_hands_relation": "Throughout the 60-frame sequence, the hands remain far apart. The right hand is always positioned to the right of and behind the left hand. Their vertical relationship changes: from frame 0 to 36, the right hand moves from below to above the left hand, and from frame 36 to 60, it quickly moves back to a position below the left hand."
+    }
+  ]
+}

annotations/ARCTIC_text/arctic_s05_laptop_grab_01_viz_5.json

@@ -0,0 +1,33 @@
+{
+  "seq_name": "arctic_s05_laptop_grab_01_viz",
+  "frame_start": 330,
+  "frame_end": 390,
+  "split": "test",
+  "annotations": [
+    {
+      "left": "The hand adopts a strained posture, with most fingers, especially the middle and ring, held in a hyperextended state. The thumb bends and then moves to a hyperextended position.",
+      "right": "Many fingers are held in a hyperextended, backward-bent pose. The thumb straightens, and the pinky finger performs a simple bending motion.",
+      "two_hands_relation": "The hands remain far apart, but their relative vertical position shifts as the right hand moves from below the left to above it, and then back down."
+    },
+    {
+      "left": "Most fingers move towards or maintain a hyperextended posture. The thumb's base joint notably transitions from bent to hyperextended. The wrist moves generally up and to the right.",
+      "right": "The fingers, many starting in a hyperextended state, generally move towards a more extended or neutral pose. The wrist travels primarily up and to the left.",
+      "two_hands_relation": "The hands maintain a significant distance. The right hand moves from a position below the left to above it, and then returns below."
+    },
+    {
+      "left": "The hand displays significant hyperextension. The middle and ring fingers are held with their middle joints bent backward throughout. The index finger and thumb also move into hyperextended states. The spacing between the index and middle fingers closes, while the ring and pinky fingers spread apart.",
+      "right": "Hyperextension is prominent, with the middle, ring, and pinky fingers maintaining a backward bend at their middle joints. The index finger moves from hyperextended to straight, and the thumb also straightens. The space between the index and middle fingers opens.",
+      "two_hands_relation": "The hands stay far apart. Their relative position changes dynamically as the right hand, always to the right of the left, moves from below to above the left hand and then back down again."
+    },
+    {
+      "left": "A key feature is hyperextension across multiple fingers: the middle and ring fingers are constantly hyperextended at their middle joint, while the index and pinky fingers also move to hyperextend. The thumb's base joint undergoes a fast transition from fully bent to hyperextended mid-sequence. The wrist moves up, then down, then up again.",
+      "right": "The hand is characterized by widespread hyperextension, particularly in the middle, ring, and pinky fingers. Other fingers move from hyperextended or bent postures toward a more neutral, extended state. The pinky finger straightens, bends, then straightens again. The wrist moves steadily left and up.",
+      "two_hands_relation": "There is no direct interaction. The hands' relative positions change significantly: the right hand moves from below to above the left, and then back down. Later in the sequence, the right hand also moves from a position behind the left to become aligned with it."
+    },
+    {
+      "left": "The middle and ring fingers maintain a constant hyperextended state at their middle (PIP) joints. The index finger's PIP joint also moves into hyperextension by frame 43. The thumb's base (MCP) joint rapidly shifts from fully bent to hyperextended between frames 31 and 47. Spacing between the index and middle fingers closes by frame 37, while the space between the ring and pinky opens by frame 27. The wrist moves right and back, while executing an up-down-up vertical motion.",
+      "right": "Widespread hyperextension is the dominant feature, with the PIP joints of the middle, ring, and pinky fingers held in this state throughout. The index finger's joints move from a hyperextended state to fully extended by frame 53. The thumb becomes fully extended by frame 41. The pinky finger straightens, bends, and straightens again over the course of the sequence. The wrist moves left and up for most of the motion, while also moving from back to front, and then returning back.",
+      "two_hands_relation": "Throughout the sequence, the hands remain far apart. Their relative positioning is dynamic: the right hand is always to the right of the left, but it moves from a position below the left to above it between frames 4 and 30, and then moves back down from frames 30 to 60. Towards the end, from frame 37, the right hand also moves from behind the left hand to become horizontally aligned with it."
+    }
+  ]
+}

annotations/ARCTIC_text/arctic_s05_laptop_use_01_viz_1.json

@@ -0,0 +1,33 @@
+{
+  "seq_name": "arctic_s05_laptop_use_01_viz",
+  "frame_start": 90,
+  "frame_end": 150,
+  "split": "train",
+  "annotations": [
+    {
+      "left": "The fingers exhibit widespread hyperextension while spreading apart. The wrist moves steadily forward and up.",
+      "right": "The fingers frequently hyperextend, and their spacing repeatedly opens and closes. The wrist also moves forward and upward before descending.",
+      "two_hands_relation": "The hands remain far apart, with the right hand moving from a position in front of and above the left to one behind and below it."
+    },
+    {
+      "left": "All fingers move into hyperextended postures, particularly at their base joints, and the spacing between them increases. The hand drifts forward and upward.",
+      "right": "The fingers continuously change their spacing while also moving in and out of hyperextended states. The thumb notably transitions from hyperextended to fully bent.",
+      "two_hands_relation": "The hands maintain a large distance. The right hand's position shifts from front-and-up to back-and-down relative to the left hand."
+    },
+    {
+      "left": "The thumb and all four fingers transition into hyperextended states, primarily at their base joints, while other joints straighten. Early in the motion, the fingers spread apart, starting with the outer fingers. The wrist moves forward and up for most of the sequence.",
+      "right": "All fingers display complex hyperextension motions. The thumb's base joint hyperextends before moving to a fully bent state mid-sequence. The finger spacing is highly dynamic, alternating between open and closed. The wrist moves forward, up, and to the left.",
+      "two_hands_relation": "There is no contact between the hands. The right hand, always to the right of the left, moves from a forward to a rear position and from an upward to a downward position relative to the left hand."
+    },
+    {
+      "left": "Numerous joints across all fingers enter a state of hyperextension. The thumb's base joint hyperextends mid-sequence. The index, middle, and ring fingers also hyperextend at their base joints early on. The fingers, initially closed, spread apart progressively. The wrist moves forward and upward.",
+      "right": "All fingers are highly active, with multiple joints hyperextending and then straightening. The thumb performs a large movement from hyperextension to full flexion. The fingers repeatedly spread and close. The wrist moves up and forward, then reverses its vertical motion towards the end.",
+      "two_hands_relation": "The hands maintain a far distance throughout. Their relative orientation changes significantly as the right hand moves from being in front of the left to behind it, and from above the left to below it."
+    },
+    {
+      "left": "All fingers exhibit complex motions dominated by hyperextension. The base joints of the index, middle, and ring fingers hyperextend within the first 23 frames. Mid-sequence, between frames 26 and 34, the thumb's base joint also hyperextends fast. Concurrently, the fingers spread apart; the ring and pinky fingers open by frame 12, followed by the middle and ring, and finally the index and middle. The wrist maintains a continuous medium-speed forward and upward trajectory for most of the sequence.",
+      "right": "The hand shows extensive and dynamic finger movements. The thumb's base joint hyperextends by frame 21 and then transitions to a fully bent state by frame 52. The other four fingers repeatedly move their joints in and out of hyperextension. Finger spacing is in constant flux, with the index and middle fingers opening and closing twice. The wrist moves forward and upward until frame 40, after which it begins moving down and to the left.",
+      "two_hands_relation": "The hands remain far apart and never interact. The right hand is always positioned to the right of the left. Over the duration of the sequence, the right hand moves at a fast speed from being in front of the left hand to behind it, and simultaneously moves from a position above the left hand to below it."
+    }
+  ]
+}

annotations/ARCTIC_text/arctic_s05_microwave_use_02_viz_0.json

@@ -0,0 +1,33 @@
+{
+  "seq_name": "arctic_s05_microwave_use_02_viz",
+  "frame_start": 270,
+  "frame_end": 330,
+  "split": "test",
+  "annotations": [
+    {
+      "left": "The hand maintains a tense posture with multiple fingers hyperextended. Late in the motion, the thumb quickly bends.",
+      "right": "The fingers are highly active, moving dynamically between bent, straight, and hyperextended states.",
+      "two_hands_relation": "The hands move closer together mid-sequence and then separate again without making contact."
+    },
+    {
+      "left": "Significant hyperextension is visible across most fingers, creating a stiff pose. The thumb uniquely moves from hyperextended to fully bent at the end.",
+      "right": "All fingers exhibit complex and continuous motion, frequently transitioning into and out of hyperextended postures.",
+      "two_hands_relation": "The palms approach each other rapidly and then retreat, while the right hand shifts from being in front of the left to behind it."
+    },
+    {
+      "left": "The middle finger is held in a static, hyperextended pose, while the index, ring, and pinky fingers also move into hyperextended states. The thumb hyperextends before making a fast bending motion towards the end. The wrist moves up and to the right.",
+      "right": "The fingers, starting mostly hyperextended, move toward a straighter posture before bending towards the end of the sequence. Spacing between the middle, ring, and pinky fingers opens up mid-motion. The wrist moves dynamically in all directions.",
+      "two_hands_relation": "The hands, initially distant, quickly approach each other until they are at a medium distance, and then separate again. The right hand is always to the right of the left but moves from a higher to a lower position."
+    },
+    {
+      "left": "The hand displays widespread hyperextension. The middle finger is notable for its static pose, with the base joint bent and the other two hyperextended. The thumb also hyperextends, then snaps into a bent position late in the sequence. The spacing between the middle and ring fingers opens.",
+      "right": "The hand is very mobile. All fingers transition from hyperextended states to straighter or bent postures. Towards the end, the index, middle, and ring fingers bend sharply. The wrist moves complexly, shifting left-to-right and down-up-down.",
+      "two_hands_relation": "There is a significant interaction where the palms rapidly converge and diverge. The right hand's position shifts relative to the left, moving from front to back and from up to down."
+    },
+    {
+      "left": "A key feature is the pervasive hyperextension across the fingers. The middle finger remains in a fixed complex posture with its base joint partially bent and its middle and tip joints hyperextended. The thumb's base hyperextends by frame 42, then the whole thumb quickly bends between frames 45 and 53. The index, ring, and pinky fingers also transition into hyperextended states. The wrist travels right, up, and forward. The space between the middle and ring fingers opens from frame 12 to 37.",
+      "right": "The hand is highly dynamic. The index, middle, ring, and pinky fingers all begin in various states of hyperextension, move toward extension mid-sequence, and then bend towards the end. For example, the index finger transitions from hyperextended to bent by the end of the motion. The thumb gradually straightens from a bent position. The wrist moves through a complex trajectory, shifting left then right, back then forward then back, and down then up then down.",
+      "two_hands_relation": "The palms execute a rapid approach and separation; starting far, they reach a medium distance by frame 43 and then move far apart again by the end. Their relative spatial orientation changes significantly: the right hand moves from in front of the left to behind it (frames 9-30) and also shifts from a position above the left hand to below it (frames 15-27)."
+    }
+  ]
+}

annotations/ARCTIC_text/arctic_s05_mixer_grab_01_viz_3.json

@@ -0,0 +1,33 @@
+{
+  "seq_name": "arctic_s05_mixer_grab_01_viz",
+  "frame_start": 210,
+  "frame_end": 270,
+  "split": "train",
+  "annotations": [
+    {
+      "left": "The thumb bends and extends, while the other four fingers move from a hyperextended state to a regular straight posture towards the end.",
+      "right": "Most fingers are held in a static, hyperextended state, with the thumb remaining straight.",
+      "two_hands_relation": "The hands remain far apart and do not interact."
+    },
+    {
+      "left": "The hand's primary action involves the four main fingers resolving from hyperextension. The thumb moves independently, starting hyperextended then bending. The wrist moves up and down.",
+      "right": "The hand maintains a tense, hyperextended posture across the middle, ring, and pinky fingers, while the index finger also becomes hyperextended.",
+      "two_hands_relation": "The hands maintain a large distance. In the latter half, the right hand moves to a position above and in front of the left."
+    },
+    {
+      "left": "The thumb's base joint moves from hyperextended to bent, then straightens out before bending again. Late in the sequence, the index, middle, ring, and pinky fingers all correct from a hyperextended state to a fully extended one. The wrist moves up, then down, while simultaneously moving forward then back.",
+      "right": "The middle, ring, and pinky fingers are held in constant hyperextension. The index finger also moves into a hyperextended pose towards the end. The thumb remains straight. The wrist moves up, down, and then up again.",
+      "two_hands_relation": "The hands are always far apart. Initially aligned, the right hand moves to a position above and forward of the left hand during the second half of the motion."
+    },
+    {
+      "left": "At the start, the thumb is hyperextended at its base, then it bends and extends. The most notable event is that all four other fingers, which are hyperextended at their middle or distal joints, transition to a normal extended state towards the end of the motion. At the very end, the ring and pinky fingers spread apart.",
+      "right": "A static, hyperextended posture defines this hand. The middle, ring, and pinky fingers are constantly hyperextended. The index finger's middle joint also becomes hyperextended as the sequence progresses. The thumb remains fully extended.",
+      "two_hands_relation": "There is no physical interaction between the hands. They remain far apart, with the right hand moving from an aligned position to be above and in front of the left hand after the midpoint of the sequence."
+    },
+    {
+      "left": "The thumb's base joint starts hyperextended, moves to a partially bent state by frame 20, then straightens by frame 42 before bending again. A significant, coordinated motion occurs towards the end: the index, middle, ring, and pinky fingers all transition from various states of hyperextension to a fully extended posture between frames 35 and 60. The wrist moves up until frame 16 and then down, while moving forward slowly until frame 47 and then reversing back quickly.",
+      "right": "The hand exhibits widespread hyperextension. The middle, ring, and pinky fingers maintain a constant hyperextended state at their middle joints, with the pinky's distal joint also hyperextended. The index finger's middle joint moves into hyperextension between frames 44 and 59. The thumb remains fully extended throughout. The wrist moves up, then down until frame 53, then up again.",
+      "two_hands_relation": "Throughout the entire 60-frame sequence, the hands remain far apart and do not interact. Their relative position changes after frame 25, when the right hand, which is always to the right of the left, moves quickly from being vertically and horizontally aligned to a position above and in front of the left hand."
+    }
+  ]
+}

annotations/ARCTIC_text/arctic_s05_mixer_use_02_viz_4.json

@@ -0,0 +1,33 @@
+{
+  "seq_name": "arctic_s05_mixer_use_02_viz",
+  "frame_start": 450,
+  "frame_end": 510,
+  "split": "train",
+  "annotations": [
+    {
+      "left": "The hand, with fingers initially hyperextended, slowly straightens. The wrist drifts left, up, and forward.",
+      "right": "The pinky finger rapidly opens from a bent pose to a hyperextended one. The other fingers also adopt a hyperextended posture. The wrist moves generally downwards and backwards.",
+      "two_hands_relation": "The hands remain far apart as the right hand moves from a position above and in front of the left hand to one below and behind it."
+    },
+    {
+      "left": "All fingers begin in a state of hyperextension and gradually move towards a straighter posture. Towards the end, the thumb bends. The wrist moves slowly up and to the left.",
+      "right": "The hand opens dramatically as the pinky quickly hyperextends from a bent state. The remaining fingers also move into hyperextension. The thumb briefly bends mid-sequence.",
+      "two_hands_relation": "While maintaining a large distance, the right hand moves downwards and backwards relative to the left hand's position."
+    },
+    {
+      "left": "The hand starts with all fingers hyperextended. Over the sequence, the base joints of the fingers gradually straighten. The thumb's base joint quickly hyperextends at the start, later straightens, and finally bends near the end. The space between the index and middle fingers opens and then closes.",
+      "right": "Initially, the pinky finger is bent but rapidly transitions to a hyperextended state. The index, middle, and ring fingers also progressively hyperextend at their base joints. The thumb performs a bend-and-straighten motion mid-sequence. The fingers draw closer together over time.",
+      "two_hands_relation": "The hands do not interact and stay far apart. Throughout the motion, the right hand, which is always to the right of the left, moves from a position above and in front of the left to a position below and behind it."
+    },
+    {
+      "left": "The hand displays widespread hyperextension across most finger joints, which lessens as the base joints slowly straighten. The thumb initially hyperextends at its base before returning to an extended state and then bending. The wrist drifts left and up while moving forward and then back.",
+      "right": "The pinky finger executes a fast movement from fully bent to hyperextended at the beginning. The other fingers also transition into a hyperextended state at their bases. The thumb bends partially in the middle of the sequence before straightening again. The wrist moves downwards and backwards, with some side-to-side motion.",
+      "two_hands_relation": "The hands maintain a far distance. The right hand's position relative to the left shifts significantly, moving from high and forward to low and back, while always remaining to the right."
+    },
+    {
+      "left": "At the start, the thumb's base joint rapidly hyperextends, holding this pose until frame 21, after which it straightens and then quickly bends at frame 49. The index, middle, ring, and pinky fingers all begin with hyperextended base joints and gradually straighten over the course of the motion; many other joints also remain hyperextended. The spacing between the index and middle fingers opens until frame 41, then closes. The wrist moves slowly left, moderately forward then fast backward, and moderately upward.",
+      "right": "A key motion occurs as the pinky finger moves from fully bent to hyperextended between frames 0 and 16. The base joints of the index, middle, and ring fingers also transition from fully extended to hyperextended. Mid-sequence, the thumb bends between frames 23 and 41, then straightens again. The spacing between the ring and pinky fingers closes twice, and the index and middle fingers also close. The wrist moves down, back, and oscillates between right and left.",
+      "two_hands_relation": "The two hands remain far apart and never interact. Their relative positioning changes dynamically: the right hand is always to the right of the left hand, but it moves from a position above the left to below it, and simultaneously moves from being in front of the left to behind it by frame 52."
+    }
+  ]
+}

annotations/ARCTIC_text/arctic_s05_notebook_use_01_viz_0.json

@@ -0,0 +1,33 @@
+{
+  "seq_name": "arctic_s05_notebook_use_01_viz",
+  "frame_start": 30,
+  "frame_end": 90,
+  "split": "train",
+  "annotations": [
+    {
+      "left": "The four main fingers exhibit widespread and complex hyperextension. The fingers also spread apart and close together.",
+      "right": "Similar to the left hand, the four main fingers repeatedly hyperextend. The thumb bends independently.",
+      "two_hands_relation": "The hands, initially far apart, quickly move close together mid-sequence before separating."
+    },
+    {
+      "left": "The thumb remains bent while the other four fingers engage in continuous hyperextension movements. The wrist moves right, back, and up.",
+      "right": "The fingers show significant hyperextension across multiple joints as the thumb bends twice. The wrist moves left, back, and up.",
+      "two_hands_relation": "A primary interaction occurs as the palms rapidly approach each other, hold a near position, and then move apart."
+    },
+    {
+      "left": "The thumb maintains a partially bent state. All other fingers transition from extended postures into various states of hyperextension, with the index finger's middle joint being constantly hyperextended. The fingers also dynamically spread apart and regroup.",
+      "right": "The four main fingers perform complex hyperextension motions, while the thumb bends mid-sequence and again at the end. The spacing between all adjacent fingers changes repeatedly, with multiple open-and-close cycles.",
+      "two_hands_relation": "Starting far apart, the palms move quickly to a near distance around the middle of the motion. During this approach, the right hand moves from a position to the right of the left hand to become vertically aligned with it."
+    },
+    {
+      "left": "The defining characteristic is the hyperextension of the index, middle, ring, and pinky fingers at various joints. For instance, the middle finger's base joint hyperextends and returns to straight multiple times. The thumb is static and bent. The fingers also spread apart, particularly between the index and middle.",
+      "right": "While the thumb bends twice, the other four fingers execute complex movements into hyperextended states. The pinky finger notably transitions from bent to hyperextended. The wrist moves down then sharply up.",
+      "two_hands_relation": "The hands interact by quickly moving from far to near mid-sequence. The relative position shifts significantly, with the right hand moving from in front of the left to behind it, and from a lower position to a higher one."
+    },
+    {
+      "left": "The thumb is held in a constant partially bent pose. The index finger's middle joint is hyperextended throughout, and its base joint also hyperextends by frame 31. The middle, ring, and pinky fingers perform complex and varied hyperextension movements across all their joints throughout the sequence. The fingers spread apart in the first half, with the index-middle pair opening by frame 15. The wrist moves right until frame 35 then left, while moving backward and upward for most of the duration.",
+      "right": "The thumb bends from a straight position twice, first from frame 28-39 and again from frame 52-60. Concurrently, the index, middle, ring, and pinky fingers all transition into hyperextended states; for example, the index finger's three main joints are all hyperextended by frame 42. Finger spacing is highly dynamic, with the index-middle pair opening and closing twice. The wrist moves left and back, executing a fast upward motion between frames 16 and 41.",
+      "two_hands_relation": "There is no contact between the hands. Their primary interaction is a fast approach between frames 22 and 47, where the distance between the palms changes from far to near. During this time, the right hand moves from being to the right of, in front of, and below the left hand to a position that is vertically aligned, behind, and above the left hand before they separate again."
+    }
+  ]
+}